Patch Forecast
Amber warning
Patch this week.

CVE-2026-100254

Jetbrains Teamcity: OS command injection

Risk score
61/100
CVSS
8.8 v3.1
Exploit chance (30 days)
0.5%
Published
30 Sep 2026

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What to know

What it is
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
Jetbrains Teamcity before 2026.2, 2026.1.4, 2025.11.8
Fix
Upgrade Jetbrains Teamcity to 2026.2, 2026.1.4 or 2025.11.8 (whichever matches your release line), or later.
Exploitation
No known exploitation

Why it is Amber

  • CVSS 8.8 high

References

Original 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

Last activity 30 Sep 2026. Patch Forecast updates every hour.