CVE-2024-56355 Cross-site scripting in TeamCity

What is CVE-2024-56355?

CVE-2024-56355 is a medium-severity cross-site scripting vulnerability in Jetbrains Teamcity, published on 20 Dec 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

In JetBrains TeamCity before 2024.12 missing Content-Type header in RemoteBuildLogController response could lead to XSS

Weakness: CWE-79

Which versions are affected by CVE-2024-56355?

It affects 1 product.

Products include Jetbrains Teamcity.

How do I fix CVE-2024-56355?

No fix has been published for CVE-2024-56355 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-56355 being exploited?

There is no known exploitation of CVE-2024-56355 in the wild and no public exploit code.

Other vulnerabilities in Jetbrains Teamcity

• CVE-2026-63077 JetBrains TeamCity Deserialization of Untrusted Data Exploited Critical 9.8
• CVE-2024-27198 JetBrains TeamCity Authentication Bypass Exploited Critical 9.8
• CVE-2023-42793 JetBrains TeamCity Authentication Bypass Exploited Critical 9.8
• CVE-2024-27199 JetBrains TeamCity Relative Path Traversal Exploited High 7.3
• CVE-2024-23917 Auth bypass in TeamCity Critical 9.8

All Jetbrains Teamcity vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xq2w-cvxp-qhgg.