{"url":"http://public2.vulnerablecode.io/api/packages/284037?format=json","purl":"pkg:npm/immer@1.12.1","type":"npm","namespace":"","name":"immer","version":"1.12.1","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"9.0.6","latest_non_vulnerable_version":"9.0.6","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/53963?format=json","vulnerability_id":"VCID-8139-4h24-ayae","summary":"Prototype Pollution\nimmer suffers from a prototype pollution vulnerability in the `applyPatches_` function of `patches.ts`.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-28477.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-28477.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-28477","reference_id":"","reference_type":"","scores":[{"value":"0.00287","scoring_system":"epss","scoring_elements":"0.52422","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00287","scoring_system":"epss","scoring_elements":"0.5238","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00287","scoring_system":"epss","scoring_elements":"0.52441","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00287","scoring_system":"epss","scoring_elements":"0.52448","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00287","scoring_system":"epss","scoring_elements":"0.52429","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00287","scoring_system":"epss","scoring_elements":"0.52401","published_at":"2026-06-08T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-28477"},{"reference_url":"https://github.com/immerjs/immer/blob/master/src/plugins/patches.ts%23L213","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":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/blob/master/src/plugins/patches.ts%23L213"},{"reference_url":"https://github.com/immerjs/immer/commit/da2bd4fa0edc9335543089fe7d290d6a346c40c5","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":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/commit/da2bd4fa0edc9335543089fe7d290d6a346c40c5"},{"reference_url":"https://github.com/immerjs/immer/issues/738","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":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/issues/738"},{"reference_url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1061986","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":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1061986"},{"reference_url":"https://snyk.io/vuln/SNYK-JS-IMMER-1019369","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":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-JS-IMMER-1019369"},{"reference_url":"https://www.npmjs.com/package/immer","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":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.npmjs.com/package/immer"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1918162","reference_id":"1918162","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1918162"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28477","reference_id":"CVE-2020-28477","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":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28477"},{"reference_url":"https://github.com/advisories/GHSA-9qmh-276g-x5pj","reference_id":"GHSA-9qmh-276g-x5pj","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-9qmh-276g-x5pj"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:1169","reference_id":"RHSA-2021:1169","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:1169"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/79575?format=json","purl":"pkg:npm/immer@8.0.1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-9sgw-5m6z-pyaq"},{"vulnerability":"VCID-c339-7dcz-akc8"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/immer@8.0.1"}],"aliases":["CVE-2020-28477","GHSA-9qmh-276g-x5pj"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-8139-4h24-ayae"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/41418?format=json","vulnerability_id":"VCID-9sgw-5m6z-pyaq","summary":"Improperly Controlled Modification of Dynamically-Determined Object Attributes\nimmer is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3757.json","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3757.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3757","reference_id":"","reference_type":"","scores":[{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.64039","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.63991","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.64033","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.64042","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.64031","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00451","scoring_system":"epss","scoring_elements":"0.64019","published_at":"2026-06-08T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-3757"},{"reference_url":"https://github.com/immerjs/immer","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer"},{"reference_url":"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237"},{"reference_url":"https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://huntr.dev/bounties/23d38099-71cd-42ed-a77a-71e68094adfa"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2000734","reference_id":"2000734","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2000734"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3757","reference_id":"CVE-2021-3757","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-3757"},{"reference_url":"https://github.com/advisories/GHSA-c36v-fmgq-m8hx","reference_id":"GHSA-c36v-fmgq-m8hx","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-c36v-fmgq-m8hx"},{"reference_url":"https://access.redhat.com/errata/RHSA-2021:4848","reference_id":"RHSA-2021:4848","reference_type":"","scores":[],"url":"https://access.redhat.com/errata/RHSA-2021:4848"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/58860?format=json","purl":"pkg:npm/immer@9.0.6","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/immer@9.0.6"}],"aliases":["CVE-2021-3757","GHSA-c36v-fmgq-m8hx"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-9sgw-5m6z-pyaq"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/41402?format=json","vulnerability_id":"VCID-c339-7dcz-akc8","summary":"Access of Resource Using Incompatible Type (Type Confusion)\nA type confusion vulnerability can lead to a bypass of CVE-2020-28477 when the user-provided keys used in the path parameter are arrays. In particular, this bypass is possible because the condition `(p === \"__proto__\" || p === \"constructor\")` in `applyPatches_` returns false if `p` is `['__proto__']` (or `['constructor']`). The `===` operator (strict equality operator) returns false if the operands have different type.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23436.json","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23436.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23436","reference_id":"","reference_type":"","scores":[{"value":"0.00546","scoring_system":"epss","scoring_elements":"0.68208","published_at":"2026-06-09T12:55:00Z"},{"value":"0.00546","scoring_system":"epss","scoring_elements":"0.68167","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00546","scoring_system":"epss","scoring_elements":"0.68207","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00546","scoring_system":"epss","scoring_elements":"0.68215","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00546","scoring_system":"epss","scoring_elements":"0.68192","published_at":"2026-06-08T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-23436"},{"reference_url":"https://github.com/immerjs/immer","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer"},{"reference_url":"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/immerjs/immer/commit/fa671e55ee9bd42ae08cc239102b665a23958237"},{"reference_url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1579266"},{"reference_url":"https://snyk.io/vuln/SNYK-JS-IMMER-1540542","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://snyk.io/vuln/SNYK-JS-IMMER-1540542"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2041833","reference_id":"2041833","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2041833"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23436","reference_id":"CVE-2021-23436","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23436"},{"reference_url":"https://github.com/advisories/GHSA-33f9-j839-rf8h","reference_id":"GHSA-33f9-j839-rf8h","reference_type":"","scores":[{"value":"CRITICAL","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-33f9-j839-rf8h"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/58860?format=json","purl":"pkg:npm/immer@9.0.6","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/immer@9.0.6"}],"aliases":["CVE-2021-23436","GHSA-33f9-j839-rf8h"],"risk_score":4.5,"exploitability":"0.5","weighted_severity":"9.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-c339-7dcz-akc8"}],"fixing_vulnerabilities":[],"risk_score":"4.5","resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/immer@1.12.1"}