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TI-2026-85866 Aliases CVE-2026-123325GHSA-w3jx-8jw5-vf7p

Untrusted remote code inclusion in JetBrains YouTrack plugin sandbox

Priority LOW 33CWE-829Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Low · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-829.

Summary

JetBrains YouTrack versions before 2025.3.170763, 2026.1.14150, 2026.2.19656 are affected. The plugin sandbox page includes remote code from an untrusted control sphere (CWE-829). A remote attacker without privileges can get a user to load untrusted remote code if the user interacts with the page.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

In JetBrains YouTrack before 2025.3.170763, 2026.1.14150, 2026.2.19656 inclusion of untrusted remote code was possible via the plugin sandbox page

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00273 19th percentileScored 2026-11-07
Fix Fixed YouTrack (JetBrains): 2025.3.170763, 2026.1.14150, 2026.2.19656

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JetBrainsYouTrackbefore 2025.3.170763, 2026.1.14150, 2026.2.196562025.3.170763, 2026.1.14150, 2026.2.19656Patch availableCNA
  • YouTrack VendorJetBrains Affected before 2025.3.170763, 2026.1.14150, 2026.2.19656 Fixed in 2025.3.170763, 2026.1.14150, 2026.2.19656 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:jetbrains:youtrack:*:*:*:*:*:*:*:*——JetBrains
  • cpe:2.3:a:jetbrains:youtrack:*:*:*:*:*:*:*:* Versions — — ·JetBrains

Remediation

Upgrade JetBrains YouTrack to 2025.3.170763, 2026.1.14150 or 2026.2.19656.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA YouTrack (JetBrains) Fixed in 2025.3.170763, 2026.1.14150, 2026.2.19656

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    JetBrains YouTrack 2025.3.170763, 2026.1.14150, 2026.2.19656

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-85864 Improper URL validation in JetBrains YouTrack app widget hostPriority LOW 36
    Show all 2 records →

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-123325
  2. 2026-11-06 Alias added: GHSA-w3jx-8jw5-vf7p
  3. 2026-11-07 CISA SSVC decision points changed
  4. 2026-11-07 Priority changed: MEDIUM → LOW

References

Other 1

  • TI-2026-45031 Deserialization of untrusted data in JetBrains TeamCity KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18053 In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-22884 In JetBrains TeamCity before 2023.05.4 authentication bypass leading to RCE on TeamCity Server was possible KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18054 In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible KEVCVSS 3.1HIGH 7.3
  • TI-2024-15905 In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible CVSS 3.1CRITICAL 9.8
  • TI-2024-24589 Insufficiently protected credentials in JetBrains IntelliJ IDEA CVSS 3.1CRITICAL 9.3
See all 787 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences