CVE-2026-123335: JetBrains YouTrack · Missing Authorization
Affects JetBrains YouTrackSource CVE Database V5
Not known to be exploited · CVSS 3.5 Low : upgrade to 2026.2.19562 when convenient.
Data as of 6 Nov 2026, 10:49 UTC
Thin evidence
One scorer or none| CNA (JetBrains) | CVSS 3.1 | 3.5 |
|---|
- Patch
- Available – fixed in 2026.2.19562
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 6 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade JetBrains YouTrack to 2026.2.19562.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| JetBrainsYouTrack | Affected
| Fixed in
|
AI-suggested
Upgrade JetBrains YouTrack to version 2026.2.19562 or later, where this missing authorization vulnerability has been fixed. No other mitigation is required as the issue is resolved in the fixed version.
Description
CVE-2026-123335 is a low-severity vulnerability in JetBrains YouTrack before version 2026.2.19562, 2026.1.14137, and 2025.3.169041. It involves missing authorization checks that allow a user with limited privileges to attach tags to any issue via the tag issues collection. This flaw does not impact confidentiality or availability but can lead to unauthorized modification of issue metadata.