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VulnerabilityPublished

CVE-2026-123335: JetBrains YouTrack · Missing Authorization

Affects JetBrains YouTrackSource CVE Database V5

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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

CVSS 3.1 base score
3.5Low
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (JetBrains)CVSS 3.13.5
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
JetBrainsYouTrackAffected
  • =0
Fixed in
  • 2026.2.19562

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.

References

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