{"cve":"CVE-2026-53436","nvd":{"published":"2026-06-10T14:16:36.547","modified":"2026-10-26T11:10:00.157","status":"Analyzed","description":"Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-601"],"references":["https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755"],"products":["jenkins:jenkins"],"source":"nvd","synced_at":"2026-10-26T11:33:08.859761529+00:00"},"epss":{"cve":"CVE-2026-53436","score":0.00282,"percentile":0.20463,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-3rqh-hch3-jhpc","url":"https://osv.dev/vulnerability/GHSA-3rqh-hch3-jhpc","summary":"Jenkins Open Redirect via Relative Path Segments in Post-Login Redirect URL","modified":"2026-09-10T03:50:55.469052800Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":[">=2.556 <2.568"],"fixed":["2.568"]},{"ecosystem":"Maven","name":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","ranges":["<2.555.3"],"fixed":["2.555.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}