CVE-2021-31909 Command injection in n/a

What is CVE-2021-31909?

CVE-2021-31909 is a critical command injection 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 JetBrains TeamCity before 2020.2.3, argument injection leading to remote code execution was possible.

Weakness: CWE-88

Which versions are affected by CVE-2021-31909?

It affects 1 product.

Products include Jetbrains Teamcity.

How do I fix CVE-2021-31909?

No fix has been published for CVE-2021-31909 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-31909 being exploited?

There is no known exploitation of CVE-2021-31909 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-97gq-9pf7-vwvc.