{"url":"http://public2.vulnerablecode.io/api/packages/532036?format=json","purl":"pkg:maven/org.pac4j/pac4j-core@4.0.3","type":"maven","namespace":"org.pac4j","name":"pac4j-core","version":"4.0.3","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"5.7.10","latest_non_vulnerable_version":"6.4.1","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/84404?format=json","vulnerability_id":"VCID-n3a6-c383-rfbd","summary":"PAC4J is vulnerable to Cross-Site Request Forgery (CSRF). A malicious attacker can craft a specially designed website which, when visited by a user, will automatically submit a forged cross-site request with a token whose hash collides with the victim's legitimate CSRF token. Importantly, the attacker does not need to know the victim’s CSRF token or its hash prior to the attack. Collisions in the deterministic String.hashCode() function can be computed directly, reducing the effective token's security space to 32 bits. This bypasses CSRF protection, allowing profile updates, password changes, account linking, and any other state-changing operations to be performed without the victim's consent.\n\nThis issue was fixed in PAC4J versions 5.7.10 and 6.4.1","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-40458","reference_id":"","reference_type":"","scores":[{"value":"6e-05","scoring_system":"epss","scoring_elements":"0.004","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-40458"},{"reference_url":"https://cert.pl/en/posts/2026/04/CVE-2026-40458","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"value":"7.0","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://cert.pl/en/posts/2026/04/CVE-2026-40458"},{"reference_url":"https://github.com/pac4j/pac4j","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"value":"7.0","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pac4j/pac4j"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40458","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"value":"7.0","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40458"},{"reference_url":"https://cert.pl/en/posts/2026/04/CVE-2026-40458/","reference_id":"CVE-2026-40458","reference_type":"","scores":[{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-17T13:57:28Z/"}],"url":"https://cert.pl/en/posts/2026/04/CVE-2026-40458/"},{"reference_url":"https://github.com/advisories/GHSA-xw5c-jc7x-gf75","reference_id":"GHSA-xw5c-jc7x-gf75","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-xw5c-jc7x-gf75"},{"reference_url":"https://www.pac4j.org/blog/security-advisory-pac4j-core-and-ldap.html","reference_id":"security-advisory-pac4j-core-and-ldap.html","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},{"value":"7","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"},{"value":"7.0","scoring_system":"cvssv4","scoring_elements":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:L/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:N/T:P/P:M/B:A/M:M/D:T/2026-04-17T13:57:28Z/"}],"url":"https://www.pac4j.org/blog/security-advisory-pac4j-core-and-ldap.html"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/373798?format=json","purl":"pkg:maven/org.pac4j/pac4j-core@5.7.10","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.pac4j/pac4j-core@5.7.10"},{"url":"http://public2.vulnerablecode.io/api/packages/373799?format=json","purl":"pkg:maven/org.pac4j/pac4j-core@6.4.1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.pac4j/pac4j-core@6.4.1"}],"aliases":["CVE-2026-40458","GHSA-xw5c-jc7x-gf75"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-n3a6-c383-rfbd"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/207286?format=json","vulnerability_id":"VCID-x4k7-q7vu-4bgk","summary":"Pac4j token validation bypass if OpenID Connect provider supports none algorithm","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2021-44878","reference_id":"","reference_type":"","scores":[{"value":"0.00139","scoring_system":"epss","scoring_elements":"0.33737","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2021-44878"},{"reference_url":"https://github.com/pac4j/pac4j","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pac4j/pac4j"},{"reference_url":"https://github.com/pac4j/pac4j/commit/09684e0de1c4753d22c53b8135d4ef61cfda76f7","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pac4j/pac4j/commit/09684e0de1c4753d22c53b8135d4ef61cfda76f7"},{"reference_url":"https://github.com/pac4j/pac4j/commit/22b82ffd702a132d9f09da60362fc6264fc281ae","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pac4j/pac4j/commit/22b82ffd702a132d9f09da60362fc6264fc281ae"},{"reference_url":"https://github.com/pac4j/pac4j/commit/9c87bbc536ed5d05f940ae015403120df2935589","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/pac4j/pac4j/commit/9c87bbc536ed5d05f940ae015403120df2935589"},{"reference_url":"https://openid.net/specs/openid-connect-core-1_0.html#IDToken","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://openid.net/specs/openid-connect-core-1_0.html#IDToken"},{"reference_url":"https://www.pac4j.org/4.5.x/docs/release-notes.html","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.pac4j.org/4.5.x/docs/release-notes.html"},{"reference_url":"https://www.pac4j.org/blog/cve_2021_44878_is_this_serious.html","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.pac4j.org/blog/cve_2021_44878_is_this_serious.html"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44878","reference_id":"CVE-2021-44878","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:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44878"},{"reference_url":"https://github.com/advisories/GHSA-xhw6-hjc9-679m","reference_id":"GHSA-xhw6-hjc9-679m","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-xhw6-hjc9-679m"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/392071?format=json","purl":"pkg:maven/org.pac4j/pac4j-core@5.2.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-n3a6-c383-rfbd"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.pac4j/pac4j-core@5.2.0"}],"aliases":["CVE-2021-44878","GHSA-xhw6-hjc9-679m"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-x4k7-q7vu-4bgk"}],"fixing_vulnerabilities":[],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:maven/org.pac4j/pac4j-core@4.0.3"}