JetBrainsCVE-2026-100277
JetBrains YouTrack: improper authorization
High8.9CVE-2026-100277 · Published Sep 30, 2026 · updated Oct 2, 2026
In JetBrains YouTrack before 2026.2.19197 account takeover was possible by replaying a notification signature
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| YouTrack Product | < 2026.2.19197 | 2026.2.19197 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-863
More JetBrains advisories
All JetBrains| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 30 | JetBrains YouTrack: cross-site scripting | Medium6.9 | 2026.2.19197 |
| Sep 30 | JetBrains YouTrack: improper authorization | Medium5.9 | 2026.2.19197 |
| Sep 30 | JetBrains YouTrack: improper authorization | Medium4.9 | 2026.2.19197 |
| Sep 30 | JetBrains YouTrack: server-side request forgery | Medium6.5 | 2026.2.19197 |
| Sep 30 | JetBrains YouTrack: missing authorization | Low3.1 | 2026.2.19197 |
| Sep 30 | JetBrains YouTrack: insecure direct object reference | High7.7 | 2026.2.19197 |