{"id":"CVE-2026-100263","published":"2026-09-30T16:16:57.267","lastModified":"2026-10-02T20:23:31.353","description":"In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible","cvssScore":4.7,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","cwes":["CWE-79"],"vendors":["jetbrains"],"products":["youtrack"],"references":[{"url":"https://www.jetbrains.com/privacy-security/issues-fixed/","tags":["Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":null}