# CVE-2024-36378: Denial of service in TeamCity

> Attackers can cause denial of service on JetBrains TeamCity servers by sending incorrect authentication tokens.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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:** 29 May 2024
- **Updated:** 2 Aug 2024

## What is CVE-2024-36378?

CVE-2024-36378 is a medium-severity denial of service vulnerability in Jetbrains Teamcity, published on 29 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In JetBrains TeamCity before 2024.03.2 server was susceptible to DoS attacks with incorrect auth tokens

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2024-36378?

It affects 1 product.


Products: Jetbrains Teamcity.

## How do I fix CVE-2024-36378?

No fix has been published for CVE-2024-36378 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-36378 being exploited?

There is no known exploitation of CVE-2024-36378 in the wild and no public exploit code.

## 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-2024-23917](https://insights.sbomify.com/CVE-2024-23917/): Auth bypass in TeamCity (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-36378 and fix it if it is affected.

What it is: CVE-2024-36378 is a medium-severity denial of service vulnerability in Jetbrains Teamcity, published on 29 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-36378 in the wild and no public exploit code.

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-2024-36378/ (Markdown: https://insights.sbomify.com/CVE-2024-36378/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-36378
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-36378
- OSV: https://osv.dev/vulnerability/CVE-2024-36378

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-36378/
Summaries are generated and may contain mistakes; the official description above is the record.