# CVE-2024-23917: Auth bypass in TeamCity

> Attackers can bypass authentication in JetBrains TeamCity to achieve remote code execution, requiring immediate upgrades.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Feb 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-73v5-rhgg-73mq

## What is CVE-2024-23917?

CVE-2024-23917 is a critical authentication bypass vulnerability in Jetbrains Teamcity, published on 6 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In JetBrains TeamCity before 2023.11.3 authentication bypass leading to RCE was possible

Weakness: CWE-306 (Missing Authentication for Critical Functionality), CWE-288 (Authentication Bypass Using an Alternate Path or Channel)

## Which versions are affected by CVE-2024-23917?

It affects 1 product.


Products: Jetbrains Teamcity.

## How do I fix CVE-2024-23917?

No fix has been published for CVE-2024-23917 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-23917 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23917 exists.

Public exploit code:

- JetBrains TeamCity > 2023.11.3 - Authentication Bypass (nuclei): http/cves/2024/CVE-2024-23917.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-2024-27199](https://insights.sbomify.com/CVE-2024-27199/): JetBrains TeamCity Relative Path Traversal (high 7.3, exploited in the wild)
- [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-2024-23917 and fix it if it is affected.

What it is: CVE-2024-23917 is a critical authentication bypass vulnerability in Jetbrains Teamcity, published on 6 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23917 exists.

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-2024-23917/ (Markdown: https://insights.sbomify.com/CVE-2024-23917/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-23917
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-23917
- OSV: https://osv.dev/vulnerability/CVE-2024-23917

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-23917/
Summaries are generated and may contain mistakes; the official description above is the record.