What happened
In JetBrains YouTrack before 2026.2.18991 stored HTML injection via the User-Agent header was possible
Affected versions
YouTrack: before 2026.2.18991 (semver) Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.
Source timeline
CVE record published by NVDView source ↗
Record history
Record created from the first normalized source observation.
Metadata and source references refreshed.