{"url":"http://public2.vulnerablecode.io/api/packages/510038?format=json","purl":"pkg:composer/ssddanbrown/bookstack@0.30.3","type":"composer","namespace":"ssddanbrown","name":"bookstack","version":"0.30.3","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"24.05.1","latest_non_vulnerable_version":"24.05.1","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/49807?format=json","vulnerability_id":"VCID-acpc-g756-rud5","summary":"bookstack is vulnerable to Improper Access Control","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4194","reference_id":"","reference_type":"","scores":[{"value":"0.0016","scoring_system":"epss","scoring_elements":"0.36602","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4194"},{"reference_url":"https://github.com/bookstackapp/bookstack","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack"},{"reference_url":"https://github.com/bookstackapp/bookstack/commit/cb0d674a71449de883713db2fcdccb6e108992ad","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack/commit/cb0d674a71449de883713db2fcdccb6e108992ad"},{"reference_url":"https://huntr.dev/bounties/0bc8b3f7-9057-4eb7-a989-24cd5689f114","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/0bc8b3f7-9057-4eb7-a989-24cd5689f114"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4194","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4194"},{"reference_url":"https://github.com/advisories/GHSA-ghhm-xrwp-75m9","reference_id":"GHSA-ghhm-xrwp-75m9","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-ghhm-xrwp-75m9"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/85771?format=json","purl":"pkg:composer/ssddanbrown/bookstack@21.12.1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bk4f-gmj9-kqdg"},{"vulnerability":"VCID-ujz9-j3ak-6qf4"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@21.12.1"}],"aliases":["CVE-2021-4194","GHSA-ghhm-xrwp-75m9"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-acpc-g756-rud5"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/13338?format=json","vulnerability_id":"VCID-bk4f-gmj9-kqdg","summary":"BookStack Incorrect Access Control vulnerability\nIncorrect access control in BookStack before v24.05.1 allows attackers to confirm existing system users and perform targeted notification email DoS via public facing forms.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2024-36676","reference_id":"","reference_type":"","scores":[{"value":"0.00229","scoring_system":"epss","scoring_elements":"0.45655","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2024-36676"},{"reference_url":"https://github.com/BookStackApp/BookStack","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack"},{"reference_url":"https://github.com/BookStackApp/BookStack/commit/69af9e0dbdefd8c6c951e8afbe2bba141d454beb","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack/commit/69af9e0dbdefd8c6c951e8afbe2bba141d454beb"},{"reference_url":"https://github.com/BookStackApp/BookStack/issues/4993","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-10T14:28:31Z/"}],"url":"https://github.com/BookStackApp/BookStack/issues/4993"},{"reference_url":"https://github.com/BookStackApp/BookStack/releases/tag/v24.05.1","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-10T14:28:31Z/"}],"url":"https://github.com/BookStackApp/BookStack/releases/tag/v24.05.1"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2024-36676","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-36676"},{"reference_url":"https://www.bookstackapp.com/blog/bookstack-release-v24-05-1","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"value":"8.8","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.bookstackapp.com/blog/bookstack-release-v24-05-1"},{"reference_url":"https://www.bookstackapp.com/blog/bookstack-release-v24-05-1/","reference_id":"bookstack-release-v24-05-1","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-07-10T14:28:31Z/"}],"url":"https://www.bookstackapp.com/blog/bookstack-release-v24-05-1/"},{"reference_url":"https://github.com/advisories/GHSA-pj36-fcrg-327j","reference_id":"GHSA-pj36-fcrg-327j","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-pj36-fcrg-327j"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/714580?format=json","purl":"pkg:composer/ssddanbrown/bookstack@24.05.1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@24.05.1"},{"url":"http://public2.vulnerablecode.io/api/packages/37842?format=json","purl":"pkg:composer/ssddanbrown/bookstack@24.5.1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@24.5.1"}],"aliases":["CVE-2024-36676","GHSA-pj36-fcrg-327j"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-bk4f-gmj9-kqdg"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/42732?format=json","vulnerability_id":"VCID-bxkx-xc7f-23bh","summary":"BookStack is vulnerable to Improper Access Control.\nBookStack prior to version 21.11.3 is vulnerable to Improper Access Control. A logged-in user with no privileges OR guest user (if public access enabled) can access the /search/users/select AJAX endpoint meant for admins to manage audit logs, to dump all usernames existing in the Bookstack database. This can also be used to harvest email belonging to a user because BookStack also uses the code where(`email`, `like`, `%` . $search . `%`) to search for users based on email.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4119","reference_id":"","reference_type":"","scores":[{"value":"0.00425","scoring_system":"epss","scoring_elements":"0.62507","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4119"},{"reference_url":"https://github.com/bookstackapp/bookstack","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack"},{"reference_url":"https://github.com/bookstackapp/bookstack/commit/e765e618547c92f4e0b46caca6fb91f0174efd99","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack/commit/e765e618547c92f4e0b46caca6fb91f0174efd99"},{"reference_url":"https://github.com/BookStackApp/BookStack/releases/tag/v21.11.3","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack/releases/tag/v21.11.3"},{"reference_url":"https://huntr.dev/bounties/135f2d7d-ab0b-4351-99b9-889efac46fca","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/135f2d7d-ab0b-4351-99b9-889efac46fca"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4119","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4119"},{"reference_url":"https://github.com/advisories/GHSA-9c5c-5j4h-8q2c","reference_id":"GHSA-9c5c-5j4h-8q2c","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-9c5c-5j4h-8q2c"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/76956?format=json","purl":"pkg:composer/ssddanbrown/bookstack@21.11.3","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-acpc-g756-rud5"},{"vulnerability":"VCID-bk4f-gmj9-kqdg"},{"vulnerability":"VCID-ujz9-j3ak-6qf4"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@21.11.3"}],"aliases":["CVE-2021-4119","GHSA-9c5c-5j4h-8q2c"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-bxkx-xc7f-23bh"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/42802?format=json","vulnerability_id":"VCID-dtsa-knwj-9fg8","summary":"bookstack is vulnerable to Cross-Site Request Forgery (CSRF)","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3944","reference_id":"","reference_type":"","scores":[{"value":"0.00068","scoring_system":"epss","scoring_elements":"0.21221","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3944"},{"reference_url":"https://github.com/bookstackapp/bookstack","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack"},{"reference_url":"https://github.com/bookstackapp/bookstack/commit/88e6f93abf54192a69cc8080e0dc6516ee68ccbb","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack/commit/88e6f93abf54192a69cc8080e0dc6516ee68ccbb"},{"reference_url":"https://huntr.dev/bounties/65551490-5ade-49aa-8b8d-274c2ca9fdc9","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/65551490-5ade-49aa-8b8d-274c2ca9fdc9"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3944","reference_id":"","reference_type":"","scores":[{"value":"3.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"},{"value":"LOW","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3944"},{"reference_url":"https://github.com/advisories/GHSA-wc7v-77jr-5c3m","reference_id":"GHSA-wc7v-77jr-5c3m","reference_type":"","scores":[{"value":"LOW","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-wc7v-77jr-5c3m"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/514077?format=json","purl":"pkg:composer/ssddanbrown/bookstack@21.11","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-acpc-g756-rud5"},{"vulnerability":"VCID-bk4f-gmj9-kqdg"},{"vulnerability":"VCID-bxkx-xc7f-23bh"},{"vulnerability":"VCID-knrr-7bwf-jbaw"},{"vulnerability":"VCID-ujz9-j3ak-6qf4"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@21.11"},{"url":"http://public2.vulnerablecode.io/api/packages/77006?format=json","purl":"pkg:composer/ssddanbrown/bookstack@21.11.0","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@21.11.0"}],"aliases":["CVE-2021-3944","GHSA-wc7v-77jr-5c3m"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-dtsa-knwj-9fg8"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/42807?format=json","vulnerability_id":"VCID-knrr-7bwf-jbaw","summary":"bookstack is vulnerable to Improper Access Control.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4026","reference_id":"","reference_type":"","scores":[{"value":"0.00215","scoring_system":"epss","scoring_elements":"0.4402","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-4026"},{"reference_url":"https://github.com/bookstackapp/bookstack","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack"},{"reference_url":"https://github.com/bookstackapp/bookstack/commit/b4fa82e3298a15443ca40bff205b7a16a1031d92","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack/commit/b4fa82e3298a15443ca40bff205b7a16a1031d92"},{"reference_url":"https://github.com/BookStackApp/BookStack/releases/tag/v21.11.2","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack/releases/tag/v21.11.2"},{"reference_url":"https://huntr.dev/bounties/c6dfa80d-43e6-4b49-95af-cc031bb66b1d","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/c6dfa80d-43e6-4b49-95af-cc031bb66b1d"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4026","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-4026"},{"reference_url":"https://github.com/advisories/GHSA-jm6p-wfjg-xm7x","reference_id":"GHSA-jm6p-wfjg-xm7x","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-jm6p-wfjg-xm7x"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/77009?format=json","purl":"pkg:composer/ssddanbrown/bookstack@21.11.2","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-acpc-g756-rud5"},{"vulnerability":"VCID-bk4f-gmj9-kqdg"},{"vulnerability":"VCID-bxkx-xc7f-23bh"},{"vulnerability":"VCID-ujz9-j3ak-6qf4"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@21.11.2"}],"aliases":["CVE-2021-4026","GHSA-jm6p-wfjg-xm7x"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-knrr-7bwf-jbaw"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/56267?format=json","vulnerability_id":"VCID-rpcz-72e4-nqhb","summary":"Bookstack Cross-site Scripting vulnerability\nIn BookStack before version 0.30.4, a user with permissions to edit a page could insert JavaScript code through the use of `javascript:` URIs within a link or form which would run, within the context of the current page, when clicked or submitted. Additionally, a user with permissions to edit a page could insert a particular meta tag which could be used to silently redirect users to a alternative location upon visit of a page. Dangerous content may remain in the database but will be removed before being displayed on a page. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround without upgrading, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in BookStack version 0.30.4.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-26211","reference_id":"","reference_type":"","scores":[{"value":"0.00432","scoring_system":"epss","scoring_elements":"0.62933","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-26211"},{"reference_url":"https://github.com/BookStackApp/BookStack","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack"},{"reference_url":"https://github.com/BookStackApp/BookStack/commit/bbd1384acbe7e52c21f89af69f2dc391c95dbf54","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack/commit/bbd1384acbe7e52c21f89af69f2dc391c95dbf54"},{"reference_url":"https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"},{"reference_url":"https://github.com/BookStackApp/BookStack/security/advisories/GHSA-r2cf-8778-3jgp","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack/security/advisories/GHSA-r2cf-8778-3jgp"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26211","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26211"},{"reference_url":"https://www.bookstackapp.com/blog/beta-release-v0-30-4","reference_id":"","reference_type":"","scores":[{"value":"8.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.bookstackapp.com/blog/beta-release-v0-30-4"},{"reference_url":"https://www.bookstackapp.com/blog/beta-release-v0-30-4/","reference_id":"","reference_type":"","scores":[],"url":"https://www.bookstackapp.com/blog/beta-release-v0-30-4/"},{"reference_url":"https://github.com/advisories/GHSA-ch37-ch8w-cfrq","reference_id":"GHSA-ch37-ch8w-cfrq","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-ch37-ch8w-cfrq"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/122509?format=json","purl":"pkg:composer/ssddanbrown/bookstack@0.30.4","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-acpc-g756-rud5"},{"vulnerability":"VCID-bk4f-gmj9-kqdg"},{"vulnerability":"VCID-bxkx-xc7f-23bh"},{"vulnerability":"VCID-dtsa-knwj-9fg8"},{"vulnerability":"VCID-knrr-7bwf-jbaw"},{"vulnerability":"VCID-ujz9-j3ak-6qf4"},{"vulnerability":"VCID-vqjm-t8m2-n7eh"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@0.30.4"}],"aliases":["CVE-2020-26211","GHSA-ch37-ch8w-cfrq"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-rpcz-72e4-nqhb"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/51584?format=json","vulnerability_id":"VCID-ujz9-j3ak-6qf4","summary":"Cross-site Scripting in BookStack\nIframe tags don't have a sandbox attribute, this makes an attacker able to execute malicious javascript via an iframe and perform phishing attacks. The sandbox attribute will block script execution and prevents the content to navigate its top-level browsing context which will stop this type of attack.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2022-0877","reference_id":"","reference_type":"","scores":[{"value":"0.00308","scoring_system":"epss","scoring_elements":"0.54261","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2022-0877"},{"reference_url":"https://github.com/bookstackapp/bookstack","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack"},{"reference_url":"https://github.com/bookstackapp/bookstack/commit/856fca8289b7370cafa033ea21c408e7d4303fd6","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack/commit/856fca8289b7370cafa033ea21c408e7d4303fd6"},{"reference_url":"https://huntr.dev/bounties/b04df4e3-ae5a-4dc6-81ec-496248b15f3c","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/b04df4e3-ae5a-4dc6-81ec-496248b15f3c"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2022-0877","reference_id":"","reference_type":"","scores":[{"value":"5.4","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-0877"},{"reference_url":"https://github.com/advisories/GHSA-5rcc-6cmj-7728","reference_id":"GHSA-5rcc-6cmj-7728","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-5rcc-6cmj-7728"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/530409?format=json","purl":"pkg:composer/ssddanbrown/bookstack@22.02.3","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-bk4f-gmj9-kqdg"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@22.02.3"},{"url":"http://public2.vulnerablecode.io/api/packages/87917?format=json","purl":"pkg:composer/ssddanbrown/bookstack@22.2.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@22.2.3"}],"aliases":["CVE-2022-0877","GHSA-5rcc-6cmj-7728"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-ujz9-j3ak-6qf4"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/44278?format=json","vulnerability_id":"VCID-vqjm-t8m2-n7eh","summary":"bookstack is vulnerable to Unrestricted Upload of File with Dangerous Type.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3915","reference_id":"","reference_type":"","scores":[{"value":"0.00334","scoring_system":"epss","scoring_elements":"0.56404","published_at":"2026-05-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3915"},{"reference_url":"https://github.com/BookStackApp/BookStack","reference_id":"","reference_type":"","scores":[{"value":"7.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/BookStackApp/BookStack"},{"reference_url":"https://github.com/bookstackapp/bookstack/commit/ae155d67454d6b9f6c93b2bb457aaa4b2eb1a9ed","reference_id":"","reference_type":"","scores":[{"value":"7.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/bookstackapp/bookstack/commit/ae155d67454d6b9f6c93b2bb457aaa4b2eb1a9ed"},{"reference_url":"https://huntr.dev/bounties/fcb65f2d-257a-46f4-bac9-f6ded5649079","reference_id":"","reference_type":"","scores":[{"value":"7.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/fcb65f2d-257a-46f4-bac9-f6ded5649079"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3915","reference_id":"","reference_type":"","scores":[{"value":"7.6","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3915"},{"reference_url":"https://github.com/advisories/GHSA-w2f4-hxpm-mq98","reference_id":"GHSA-w2f4-hxpm-mq98","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-w2f4-hxpm-mq98"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/78128?format=json","purl":"pkg:composer/ssddanbrown/bookstack@21.0.3","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@21.0.3"},{"url":"http://public2.vulnerablecode.io/api/packages/510051?format=json","purl":"pkg:composer/ssddanbrown/bookstack@21.04","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-acpc-g756-rud5"},{"vulnerability":"VCID-bk4f-gmj9-kqdg"},{"vulnerability":"VCID-bxkx-xc7f-23bh"},{"vulnerability":"VCID-dtsa-knwj-9fg8"},{"vulnerability":"VCID-knrr-7bwf-jbaw"},{"vulnerability":"VCID-ujz9-j3ak-6qf4"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@21.04"}],"aliases":["CVE-2021-3915","GHSA-w2f4-hxpm-mq98"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-vqjm-t8m2-n7eh"}],"fixing_vulnerabilities":[],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:composer/ssddanbrown/bookstack@0.30.3"}