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Missing Git submodule URL validation in JetBrains TeamCity

Priority LOW 34CWE-73Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-73 and the CVSS impact.

Summary

JetBrains TeamCity before 2026.2.1 has missing validation of Git submodule URLs (CWE-73). A remote unauthenticated attacker can make the server read local repositories, which exposes their contents.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

In JetBrains TeamCity before 2026.2.1 missing validation of Git submodule URLs allowed reading local repositories on the server

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00732 54th percentileScored 2026-11-07
Fix Fixed TeamCity (JetBrains): 2026.2.1

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
JetBrainsTeamCitybefore 2026.2.12026.2.1Patch availableCNA
  • TeamCity VendorJetBrains Affected before 2026.2.1 Fixed in 2026.2.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:*before 2026.2.1VulnerableJetBrains
  • cpe:2.3:a:jetbrains:teamcity:*:*:*:*:*:*:*:* Versions before 2026.2.1 Vulnerable ·JetBrains

Remediation

Update JetBrains TeamCity to version 2026.2.1 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA TeamCity (JetBrains) Fixed in 2026.2.1

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-106219
  2. 2026-10-06 Alias added: GHSA-j4qw-7f5f-rqvw
  3. 2026-10-09 CVSS score added · NVD
  4. 2026-10-21 EPSS moved to the 50th–90th percentile

References

  • 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