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TI-2026-64595 Aliases CVE-2026-100254GHSA-6h2c-wm78-7wv3

OS command injection in JetBrains TeamCity

Priority MEDIUM 40CWE-78Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 authenticated users could execute commands on Windows servers via CRLF injection in Pipeline Git connection settings

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00472 41st percentileScored 2026-11-07
Fix Fixed TeamCity (JetBrains): 2026.2, 2026.1.4, 2025.11.8

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
JetBrainsTeamCitybefore 2026.2, 2026.1.4, 2025.11.82026.2, 2026.1.4, 2025.11.8Patch availableCNA
  • TeamCity VendorJetBrains Affected before 2026.2, 2026.1.4, 2025.11.8 Fixed in 2026.2, 2026.1.4, 2025.11.8 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:*before 2025.11.8; 2026.1 to before 2026.1.4VulnerableJetBrains
  • cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:* Versions before 2025.11.8; 2026.1 to before 2026.1.4 Vulnerable ·JetBrains

Remediation

  • Fix · CNA TeamCity (JetBrains) Fixed in 2026.2, 2026.1.4, 2025.11.8

Fixed in the same release

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

  • Release ·

    JetBrains TeamCity 2026.2, 2026.1.4, 2025.11.8

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2026-64596 In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password resetPriority MEDIUM 43
    • TI-2026-64594 In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 sandbox escape leading to code…Priority MEDIUM 40
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-100254
  2. 2026-10-03 Alias added: GHSA-6h2c-wm78-7wv3

References

Advisory 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-2015-01192 JetBrains TeamCity 8 and 9 before 9.0.2 allows bypass of account-creation restrictions… CVSS 3.1MEDIUM 6.5
See all 282 →

Sources

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