Full Report
JetBrains security advisory (AV26-171)
Analysis Summary
# Vulnerability: Multiple Flaws in JetBrains TeamCity and YouTrack
## CVE Details
*Note: The specific CVE identifiers were not listed in the summary advisory AV26-171; users must refer to the JetBrains "Fixed security issues" portal for the granular mapping of IDs to these specific releases.*
- **CVE ID:** Pending/Multiple (Refer to vendor portal)
- **CVSS Score:** Not specified in the advisory
- **CWE:** Not specified
## Affected Systems
- **Products:** JetBrains TeamCity and JetBrains YouTrack
- **Versions:**
- TeamCity: All versions prior to **2025.11.3**
- YouTrack: All versions prior to **2025.3.121962**
- **Configurations:** Default installations of the affected versions.
## Vulnerability Description
While the Canadian Centre for Cyber Security advisory (AV26-171) does not detail the technical nature of the flaws, JetBrains maintenance releases typically address security regressions including, but not limited to, cross-site scripting (XSS), improper access control, or information disclosure within the CI/CD pipeline (TeamCity) and project management (YouTrack) environments.
## Exploitation
- **Status:** Unknown (Assumed not exploited in the wild unless otherwise stated by JetBrains)
- **Complexity:** Not specified
- **Attack Vector:** Network (Typically web-based interface)
## Impact
- **Confidentiality:** Potential for unauthorized data access.
- **Integrity:** Potential for unauthorized modification of build configurations or project tasks.
- **Availability:** Potential for service disruption.
## Remediation
### Patches
JetBrains recommends updating to the following versions immediately:
- **TeamCity:** Update to version **2025.11.3** or later.
- **YouTrack:** Update to version **2025.3.121962** or later.
### Workarounds
No specific workarounds were provided. Patching to the designated versions is the recommended course of action.
## Detection
- **Indicators of Compromise:** Monitor for unusual administrative activity or unauthorized changes to build scripts and user permissions.
- **Detection methods and tools:** Audit internal application logs and verify version strings against the patched releases.
## References
- **Vendor advisories:** hxxps[://]www[.]jetbrains[.]com/privacy-security/issues-fixed/
- **Original Advisory:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/jetbrains-security-advisory-av26-171