CVE-2026-49380 Open redirect in TeamCity

Low 3.1 Published Updated

An open redirect in the SAML plugin allows attackers to redirect users to malicious sites, potentially facilitating phishing attacks against TeamCity users.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-49380?

CVE-2026-49380 is a low-severity vulnerability in Jetbrains Teamcity, published on 29 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In JetBrains TeamCity before 2026.1 open redirect in the SAML plugin was possible

Weakness: CWE-601

Which versions are affected by CVE-2026-49380?

It affects 1 product.

Products include Jetbrains Teamcity.

How do I fix CVE-2026-49380?

No fix has been published for CVE-2026-49380 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-49380 being exploited?

There is no known exploitation of CVE-2026-49380 in the wild and no public exploit code.

All Jetbrains Teamcity vulnerabilities

Sources

Also known as GHSA-wcfj-vvvg-4x96.

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