JetBrains TeamCity Relative Path Traversal Vulnerability

JetBrains TeamCity

JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed. Added to CISA KEV on 2026-04-20 (federal deadline 2026-05-04).

First seen: 20 Apr 2026
Last update: 20 Apr 2026, 12:00 UTC
Identifiers: CVE-2024-27199
Source: CISA KEV
On the menu as: CI servers

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## JetBrains TeamCity Relative Path Traversal Vulnerability
Severity: critical, exploited in the wild. Patch status: patched.
Affected: JetBrains TeamCity
Ids: CVE-2024-27199

JetBrains TeamCity contains a relative path traversal vulnerability that could allow limited admin actions to be performed. Added to CISA KEV on 2026-04-20 (federal deadline 2026-05-04).

## Steps
1. This touches infrastructure (ci). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2024-27199") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://blog.jetbrains.com/teamcity/2024/03/additional-critical-security-issues-affecting-teamcity-on-premises-cve-2024-27198-and-cve-2024-27199-update-to-2023-11-4-now/ https://nvd.nist.gov/vuln/detail/CVE-2024-27199 https://www.jetbrains.com/privacy-security/issues-fixed/
https://pwned.coffee/i/jetbrains-teamcity-relative-path-traversal-vulnerability-cve-2024-27199

Sources

Totalone very hot coffee