External Control of File Name or Path in TeamCity - CVE-2026-106219
Published: October 7, 2026
Vulnerability identifier: #VU153918
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-106219
CWE-ID: CWE-73
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to read local repositories on the server.
The vulnerability exists due to missing validation of Git submodule URLs in TeamCity's Git submodule URL handling when processing submodule URLs. A remote attacker can supply a crafted Git submodule URL to read local repositories on the server.
Affected software
TeamCity
How to mitigate CVE-2026-106219
Install security update from vendor's website.
TeamCity - update to 2026.2.1