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TI-2026-59175 Aliases CVE-2026-86483GHSA-8ghm-r78p-92fx

In JetBrains YouTrack before 2026.2.18634 stored XSS via a custom field on Agile board cards was possible

Priority LOW 25CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

In JetBrains YouTrack before 2026.2.18634 stored XSS via a custom field on Agile board cards was possible

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00643 51st percentileScored 2026-11-07
Fix Fixed YouTrack (JetBrains): 2026.2.18634

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 2026.2.186342026.2.18634Patch availableCNA
  • YouTrack VendorJetBrains Affected before 2026.2.18634 Fixed in 2026.2.18634 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

  • Fix · CNA YouTrack (JetBrains) Fixed in 2026.2.18634

Fixed in the same release

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

  • Release ·

    JetBrains YouTrack 2026.2.18634

    14 records Highest priority Priority MEDIUM 1 MEDIUM, 13 LOW

    Other records, highest priority first

    • TI-2026-59174 In JetBrains YouTrack before 2026.2.18634, insufficient validation of role assignments allowed privilege escalationPriority MEDIUM 40
    • TI-2026-59184 In JetBrains YouTrack before 2026.2.18634 a shared token cache allowed cross-tenant theft…Priority LOW 39
    • TI-2026-59186 Missing authorization in JetBrains YouTrackPriority LOW 33
    Show all 14 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86483
  2. 2026-10-03 Alias added: GHSA-8ghm-r78p-92fx
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

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