CVE-2021-26310 Denial of service in n/a

What is CVE-2021-26310?

CVE-2021-26310 is a high-severity denial of service vulnerability in Jetbrains Teamcity, published on 11 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the TeamCity IntelliJ plugin before 2020.2.2.85899, DoS was possible.

Which versions are affected by CVE-2021-26310?

It affects 1 product.

Products include Jetbrains Teamcity.

How do I fix CVE-2021-26310?

No fix has been published for CVE-2021-26310 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2021-26310 being exploited?

There is no known exploitation of CVE-2021-26310 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-5hwg-793m-rvrv.