Vulnerability in Jetbrains Teamcity

CVE-2026-100255

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

Published 2026-09-30 · last modified 2026-10-01.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Jetbrains Teamcity

Weakness classification (CWE)

CWE-1289

References

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

Frequently asked questions

What is CVE-2026-100255?: CVE-2026-100255 is a high-severity vulnerability in Jetbrains Teamcity, classified under CWE-1289. CVSS score: 8.1/10. Published 2026-09-30.
How severe is CVE-2026-100255?: High severity. CVSS v3 base score is 8.1 out of 10.