What is CVE-2026-49376?

CVE-2026-49376 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-05-29.

How severe is CVE-2026-49376?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Jetbrains Teamcity

CVE-2026-49376

In JetBrains TeamCity before 2026.1 insufficient username validation in the SAML plugin

Vulnerability class: Broken Access Control

EPSS: 0.000 (0.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Jetbrains Teamcity — versions 0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@jetbrains.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-49376?: CVE-2026-49376 is a medium-severity vulnerability in Jetbrains Teamcity, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-05-29.
How severe is CVE-2026-49376?: Medium severity. CVSS v3 base score is 6.5 out of 10.