CVE-2026-59796 Missing authorization in TeamCity

What is CVE-2026-59796?

CVE-2026-59796 is a high-severity missing authorization vulnerability in Jetbrains Teamcity, published on 10 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In JetBrains TeamCity before 2026.1.2 pipeline modification was possible due to improper permission checks

Weakness: CWE-862

Which versions are affected by CVE-2026-59796?

It affects 1 product.

Products include Jetbrains Teamcity.

How do I fix CVE-2026-59796?

No fix has been published for CVE-2026-59796 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-59796 being exploited?

There is no known exploitation of CVE-2026-59796 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-6wf4-qp9f-c3xh.