CVE-2026-100254

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-30 · updated 2026-10-06
Weakness: CWE-78

Description

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 authenticated users could execute commands on Windows servers via CRLF injection in Pipeline Git connection settings

Affected products

JetBrains TeamCity: before 2025.11.8; from 2026.1 before 2026.1.4 — fixed in 2025.11.8, 2026.1.4

How to fix

Upgrade to a fixed version: JetBrains TeamCity 2025.11.8, 2026.1.4. Check the vendor advisory for mitigations.

References

https://www.jetbrains.com/privacy-security/issues-fixed/

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