Jetbrains Teamcity — CVE-2026-100255 (Critical)

Date Sep 30, 2026

Type Vendor advisory

Signal Critical vendor advisory

Vendor / Product Jetbrains · Teamcity

CVE CVE-2026-100255

Critical vendor advisory CVE-2026-100255

Summary

In JetBrains TeamCity before 2026.2, 2026.1.4, 2025.11.8 administrator account takeover was possible via password reset

Why it matters

This CVE carries a CRITICAL severity rating (CVSS 8.1) in Jetbrains Teamcity. Patch or mitigate promptly. EPSS percentile: 25%.

Operator check

Review CVE-2026-100255 in your asset inventory. Apply patches per vendor guidance and verify Teamcity is not exposed. CVSS score: 8.1. EPSS probability: 0.3%; percentile: 25%.

Sources

NVD — CVE-2026-100255 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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