{"id":"CVE-2026-100277","published":"2026-09-30T16:16:59.380","lastModified":"2026-10-02T16:01:53.590","description":"In JetBrains YouTrack before 2026.2.19197 account takeover was possible by replaying a notification signature","cvssScore":8.9,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","cwes":["CWE-863"],"vendors":["jetbrains"],"products":["youtrack"],"references":[{"url":"https://www.jetbrains.com/privacy-security/issues-fixed/","tags":["Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A flaw in JetBrains YouTrack allowed account takeover through replaying a notification signature, posing a significant security risk.","exploitability":"Exploitation requires access to a notification signature, making it moderately difficult. Precondition is the attacker must have intercepted or obtained a valid notification signature.","blast_radius":"If exploited, this could lead to unauthorized access and control over user accounts, with potential for data exfiltration or manipulation of project data.","remediation":"Upgrade to YouTrack 2026.2.19197 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","web","account-takeover"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-02T08:47:13.577Z"}}