Missing Git submodule URL validation in JetBrains TeamCity
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
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
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
- 2026-10-06 Threatist record created from CVE-2026-106219
- 2026-10-06 Alias added: GHSA-j4qw-7f5f-rqvw
- 2026-10-09 CVSS score added · NVD
- 2026-10-21 EPSS moved to the 50th–90th percentile
References
More JetBrains Teamcity vulnerabilities
- 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
Sources
- CVE-2026-106219 · CVE Program
- CVE-2026-106219 · NVD
- FIRST EPSS
- GHSA-j4qw-7f5f-rqvw · GitHub Advisory Database · CC BY 4.0
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