Open redirect in TeamCity - CVE-2026-49380
Published: August 17, 2026
Vulnerability identifier: #VU143822
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-49380
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to redirect users to an arbitrary website.
The vulnerability exists due to an open redirect in the SAML plugin when handling redirect requests. A remote user can craft a malicious link to redirect users to an arbitrary website.
Affected software
TeamCity
How to mitigate CVE-2026-49380
Install security update from vendor's website.
TeamCity - update to 2026.1