CVE-2026-100263

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

Score

CVSS 3.1 6.1 Medium

Status

Analyzed - cve@jetbrains.com

Published

2026-09-30

Last modified

2026-10-02

Weaknesses

CWE-79

Affected products

• Youtrack (Jetbrains)

References

• https://www.jetbrains.com/privacy-security/issues-fixed/