What’s Vulnerable › Vulnerabilities

CVE-2021-26309

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-11 · updated 2026-06-17
• Weakness: CWE-668

Description

Information disclosure in the TeamCity plugin for IntelliJ before 2020.2.2.85899 was possible because a local temporary file had Insecure Permissions.

Affected products

• JetBrains TeamCity: before 2020.2.2.85899 — fixed in 2020.2.2.85899

How to fix

Upgrade to a fixed version: JetBrains TeamCity 2020.2.2.85899. Check the vendor advisory for mitigations.

References

• https://blog.jetbrains.com
• https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/
• https://blog.jetbrains.com
• https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/

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