[ CVE-2026-100263 · Published 30 Sep 2026 ]

Vulnerability in JetBrains YouTrack

CVSS 6.1 EPSS <1%1 agency advisoryNo fix listed yet

[ Description ]Official description

In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

BSI CERT-Bund30 Sep 2026WID-SEC-2026-3696

JetBrains You Track: Multiple vulnerabilities Translated from German
CVE-2026-100269CVE-2026-100274CVE-2026-100259+29 more CVEs

[ References ]References

www.jetbrains.com/privacy-security/issues-fixedVendor Advisory

[ Description ]Official description

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

JetBrains You Track: Multiple vulnerabilities Translated from German

[ References ]References