Open Redirect Affecting simplesamlphp/simplesamlphp-module-casserver package, versions <6.3.1>=7.0.0-rc1, <7.0.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.01% (1st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Open Redirect vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-PHP-SIMPLESAMLPHPSIMPLESAMLPHPMODULECASSERVER-16700562
  • published15 May 2026
  • disclosed15 May 2026
  • creditpradtke

Introduced: 15 May 2026

NewCVE-2025-65954  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade simplesamlphp/simplesamlphp-module-casserver to version 6.3.1, 7.0.0 or higher.

Overview

Affected versions of this package are vulnerable to Open Redirect via the logout process. An attacker can redirect users to arbitrary external websites by supplying a crafted url parameter. This is only exploitable if the configuration option enable_logout is set to true, and is most impactful if skip_logout_page is also set to true.

CVSS Base Scores

version 4.0
version 3.1