Quick answers
- Is CVE-2026-100279 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-100279 being exploited in the wild.
- How severe is CVE-2026-100279?
- Medium severity, with a CVSS score of 6.5, published 30 September 2026.
- Which products and versions are affected?
- Jetbrains YouTrack before 2026.2.19197.
- Is there a fix for CVE-2026-100279?
- Yes: fixed in YouTrack 2026.2.19197. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-100279 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-100279?
- Check whether you run Jetbrains YouTrack at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: YouTrack 2026.2.19197
Technical details
The vulnerability exists in the integration management functionality of YouTrack, where credential material is leaked during URL modification operations. An authenticated attacker with permissions to modify integrations can retrieve stored credentials by changing an integration URL. The flaw affects versions before 2026.2.19197 and has been patched in that version.
Affected products
- JetBrains YouTrack before 2026.2.19197
Timeline
- 2026-09-30: disclosed