CVE-2025-59455 Race condition in TeamCity
Medium 4.2
Published
Updated
Check this codebase for CVE-2025-59455 and fix it if it is affected.
What it is: CVE-2025-59455 is a medium-severity vulnerability in Jetbrains Teamcity, published on 17 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-59455 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-2025-59455/ (Markdown: https://insights.sbomify.com/CVE-2025-59455/index.md)
Attackers can bypass project isolation in JetBrains TeamCity via a race condition, potentially accessing unauthorized project data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-59455?
CVE-2025-59455 is a medium-severity vulnerability in Jetbrains Teamcity, published on 17 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In JetBrains TeamCity before 2025.07.2 project isolation bypass was possible due to race condition
Weakness: CWE-362
Which versions are affected by CVE-2025-59455?
It affects 1 product.
Products include Jetbrains Teamcity.
How do I fix CVE-2025-59455?
No fix has been published for CVE-2025-59455 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-59455 being exploited?
There is no known exploitation of CVE-2025-59455 in the wild and no public exploit code.
Other vulnerabilities in Jetbrains Teamcity
Sources
Also known as GHSA-hj85-g2fm-mxw9.