# CVE-2024-27199: JetBrains TeamCity Relative Path Traversal

> Attackers can exploit path traversal in TeamCity to perform limited administrative actions, requiring an upgrade to the latest version.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Yes, since 20 Apr 2026 (CISA KEV), used in ransomware
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Mar 2024
- **Updated:** 21 Apr 2026
- **Also known as:** GHSA-m7gg-q7qj-3r2r

## What is CVE-2024-27199?

CVE-2024-27199 is a high-severity path traversal vulnerability in Jetbrains Teamcity, published on 4 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In JetBrains TeamCity before 2023.11.4 path traversal allowing to perform limited admin actions  was possible

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), CWE-23 (Relative Path Traversal)

## Which versions are affected by CVE-2024-27199?

It affects 1 product.


Products: Jetbrains Teamcity.

## How do I fix CVE-2024-27199?

No fix has been published for CVE-2024-27199 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 4 May 2026.

## Is CVE-2024-27199 being exploited?

Yes. Attackers have exploited CVE-2024-27199 in the wild since at least 20 Apr 2026, including in ransomware campaigns.

Public exploit code:

- TeamCity < 2023.11.4 - Authentication Bypass (nuclei): http/cves/2024/CVE-2024-27199.yaml

## Other vulnerabilities in Jetbrains Teamcity

- [CVE-2026-63077](https://insights.sbomify.com/CVE-2026-63077/): JetBrains TeamCity Deserialization of Untrusted Data (critical 9.8, exploited in the wild)
- [CVE-2024-27198](https://insights.sbomify.com/CVE-2024-27198/): JetBrains TeamCity Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2023-42793](https://insights.sbomify.com/CVE-2023-42793/): JetBrains TeamCity Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2024-23917](https://insights.sbomify.com/CVE-2024-23917/): Auth bypass in TeamCity (critical 9.8)
- [CVE-2022-24331](https://insights.sbomify.com/CVE-2022-24331/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-27199 and fix it if it is affected.

What it is: CVE-2024-27199 is a high-severity path traversal vulnerability in Jetbrains Teamcity, published on 4 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2024-27199 in the wild since at least 20 Apr 2026, including in ransomware campaigns.

Affected product: Jetbrains Teamcity. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-27199/ (Markdown: https://insights.sbomify.com/CVE-2024-27199/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-27199
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-27199
- OSV: https://osv.dev/vulnerability/CVE-2024-27199

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-27199/
Summaries are generated and may contain mistakes; the official description above is the record.