{"id":"CVE-2025-24399","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-24399","generatedAt":"2026-10-27T23:56:33.019Z","title":"Jenkins OpenId Connect Authentication Plugin 4.452.v2849b_d3945fa_ and earlier, except 4.438.440.v3f5f201de5dc, treats usernames as case-insensitive, allowing attackers on Jenkins instances configured with a case-sensitive OpenID Connect provider to log…","description":"Jenkins OpenId Connect Authentication Plugin 4.452.v2849b_d3945fa_ and earlier, except 4.438.440.v3f5f201de5dc, treats usernames as case-insensitive, allowing attackers on Jenkins instances configured with a case-sensitive OpenID Connect provider to log in as any user by providing a username that differs only in letter case, potentially gaining administrator access to Jenkins.","published":"2025-01-22T17:15:14.000Z","lastModified":"2026-06-17T08:58:58.000Z","status":"Analyzed","sourceIdentifier":"jenkinsci-cert@googlegroups.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-276"],"affected":["jenkins/openid connect authentication"],"epss":{"score":0.0055,"percentile":0.45748,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.jenkins.io/security/advisory/2025-01-22/#SECURITY-3461","tags":["Vendor Advisory"],"source":"jenkinsci-cert@googlegroups.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-24399","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}