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VulnerabilityPublished

CVE-2026-123329: JetBrains YouTrack · Insecure Direct Object Reference

Affects JetBrains YouTrackSource CVE Database V5

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Not known to be exploited · CVSS 5.4 Medium : upgrade to 2026.2.19562 when convenient.

Data as of 6 Nov 2026, 10:50 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (JetBrains)CVSS 3.15.4
Patch
Available – fixed in 2026.2.19562
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
  • <2026.2.19562
Fixed in
  • 2026.2.19562

AI-suggested

Upgrade JetBrains YouTrack to version 2026.2.19562 or later, where this authorization bypass vulnerability has been fixed. No other mitigation is indicated by the vendor advisory.

Description

CVE-2026-123329 is a medium severity vulnerability in JetBrains YouTrack before version 2026.2.19562. It involves missing authorization checks in the TeamCity integration, which could allow unauthorized users to disclose actions from other projects. The issue is classified as CWE-639, an authorization bypass through user-controlled key. A fix is available in version 2026.2.19562.

References

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