CVE-2026-49376
Received
Received - Intake
Insufficient Username Validation in JetBrains TeamCity SAML Plugin
Publication date: 2026-05-29
Last updated on: 2026-05-29
Assigner: JetBrains s.r.o.
Description
Description
In JetBrains TeamCity before 2026.1 insufficient username validation in the SAML plugin
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| jetbrains | teamcity | to 2026.1 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in JetBrains TeamCity versions before 2026.1 and is caused by insufficient username validation in the SAML plugin.
How can this vulnerability impact me? :
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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