CVE-2024-27199
Published 2024-03-04 · Updated 2026-06-17 · Source cve@jetbrains.com
Summary
CVE-2024-27199 is a high-severity (CVSS 7.3) vulnerability in JetBrains TeamCity. CISA added it to the Known Exploited Vulnerabilities catalog on April 20, 2026, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 4, 2026. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. JetBrains has 4 vulnerabilities in the KEV catalog, 4 of them linked to ransomware.
All 4 known-exploited JetBrains vulnerabilities →Description
In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions was possible
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA Known-Exploited Vulnerability
Product: JetBrains — TeamCity
Name: JetBrains TeamCity Relative Path Traversal Vulnerability
Date added: 2026-04-20 · Due: 2026-05-04
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
References
- https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrive
- https://www.jetbrains.com/privacy-security/issues-fixed/
- https://www.darkreading.com/cyberattacks-data-breaches/jetbrains-teamcity-mass-exploitation-underway-rogue-accounts-thrive
- https://www.jetbrains.com/privacy-security/issues-fixed/
- https://github.com/Stuub/RCity-CVE-2024-27198/blob/main/RCity.py
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-27199