CVE-2026-65906: JetBrains TeamCity

Critical severity, CVSS 10.0. EPSS: 0.7% chance of exploitation in the next 30 days.

In JetBrains TeamCity before 2026.1.2, 2025.11.6 сode execution via Kotlin DSL sandbox escape was possible

Affected products

• JetBrains TeamCity: before 2025.11.6 (fixed in 2025.11.6); from 2026.1, before 2026.1.2 (fixed in 2026.1.2)

Published 2026-07-23. Last modified 2026-08-11.