CVE-2026-100277 json
In JetBrains YouTrack before 2026.2.19197 account takeover was possible by replaying a notification signature
published 2026-09-30 40 d ago modified 2026-10-02 37 d ago also EUVD-2026-90021
- cvss
- 8.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
In JetBrains YouTrack before 2026.2.19197 account takeover was possible by replaying a notification signature
Patch / fix
- JetBrains YouTrack 2026.2.19197
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 40 d ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- JetBrains YouTrack
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
jetbrains.com
/privacy-security/issues-fixed/
vendor-advisory
Sources
- CVE List CVE-2026-100277
- NVD CVE-2026-100277
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.