CVE-2024-31138
Published: 28 March 2024
Summary
CVE-2024-31138 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Jetbrains Teamcity. Its CVSS base score is 4.6 (Medium).
Operationally, ranked in the top 9.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
In JetBrains TeamCity versions prior to 2024.03, a cross-site scripting vulnerability (CWE-79) exists in the Agent Distribution settings. The flaw carries a CVSS 4.6 rating reflecting network attack vector, low attack complexity, low privileges required, and required user interaction, resulting in limited impacts to confidentiality and integrity.
An authenticated attacker with low privileges can supply crafted input through the affected settings to trigger script execution in another user's browser session. Successful exploitation allows limited data exposure or modification within the TeamCity interface but does not enable full system compromise.
The vendor advisory at the JetBrains security issues page recommends upgrading to TeamCity 2024.03 or later to resolve the issue.
EPSS for this CVE rose sharply from a low baseline to a peak of 0.9120 on 2026-01-13 before receding to the current value of 0.0528, indicating a period of heightened exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-29049
Vulnerability details
In JetBrains TeamCity before 2024.03 xSS was possible via Agent Distribution settings
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.