CVE entry · CVE-2024-27199
CVE-2024-27199: JetBrains TeamCity Relative Path Traversal Vulnerability
JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed.
- Actively exploited: added to CISA’s KEV catalog on April 20, 2026.
- Used by ransomware, according to CISA.
- Remediation deadline for US federal agencies: May 4, 2026.
Description from CISA’s KEV catalog.
What to do
- Check whether your estate includes JetBrains TeamCity, including internet-facing devices.
- Apply the vendor’s patch or mitigations (references below). Failing that, isolate the product or stop using it, as CISA requires of US federal agencies.
- An exploited vulnerability has often been used before it was fixed: look for signs of compromise, especially on internet-facing devices.
References
- Vendor advisory or reference cited by CISA (www.jetbrains.com)
- Vendor advisory or reference cited by CISA (blog.jetbrains.com)
- NVD entry (NIST)
- CISA KEV catalog