CVE-2026-49376
Analyzed Analyzed - Analysis Complete
Insufficient Username Validation in JetBrains TeamCity SAML Plugin

Publication date: 2026-05-29

Last updated on: 2026-06-02

Assigner: JetBrains s.r.o.

Description
In JetBrains TeamCity before 2026.1 insufficient username validation in the SAML plugin
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Meta Information
Published
2026-05-29
Last Modified
2026-06-02
Generated
2026-06-19
AI Q&A
2026-05-29
EPSS Evaluated
2026-06-18
NVD
CVE-2026-49376
EUVD
EUVD-2026-33384
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
jetbrains teamcity to 2026.1 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
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Executive Summary

This vulnerability exists in JetBrains TeamCity versions before 2026.1 and is caused by insufficient username validation in the SAML plugin.

Impact Analysis

The vulnerability has a CVSS v3.1 base score of 6.5, indicating a medium severity. It allows an attacker to potentially impact confidentiality and integrity, but not availability. Because it involves insufficient username validation in the SAML plugin, it could lead to unauthorized access or impersonation within the affected system.

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