{"id":"CVE-2026-100263","aliases":["EUVD-2026-90007","GHSA-wpxv-jj6h-wjr5"],"status":"published","title":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was...","description":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00192,"percentile":0.08991,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-09-30T15:17:49Z","modified":"2026-10-02T20:23:31Z","products":[{"vendor":"jetbrains","product":"youtrack"}],"references":[{"url":"https://www.jetbrains.com/privacy-security/issues-fixed/","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100263"},{"url":"https://www.jetbrains.com/privacy-security/issues-fixed"},{"url":"https://github.com/advisories/GHSA-wpxv-jj6h-wjr5"}],"sources":{"cve":[{"id":"CVE-2026-100263","description":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible","status":"published","published":"2026-09-30T15:17:49.717Z","modified":"2026-09-30T15:48:39.648Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:06.925367Z"}],"euvd":[{"id":"EUVD-2026-90007","description":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible","status":"published","published":"2026-09-30T15:17:49Z","modified":"2026-09-30T15:48:39Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T17:27:48.536397Z"}],"ghsa":[{"id":"GHSA-wpxv-jj6h-wjr5","title":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was...","description":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible","status":"published","published":"2026-09-30T18:33:30Z","modified":"2026-09-30T18:33:39Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:37.551329Z"}],"nvd":[{"id":"CVE-2026-100263","description":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible","status":"published","published":"2026-09-30T16:16:57.267Z","modified":"2026-10-02T20:23:31.353Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:53.097633Z"}]}}