SimpleSAMLphp-casserver has an Open Redirect vulnerability via logout_CVE-2025-65954

4.7 / 10

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Description

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. In versions below 6.3.1 and 7.0.0, the logout endpoint accepts a url query parameter to redirect to. casserver treats that url as trusted, and either (depending on configuration) redirects the browser there, or shows a "you've been logged out" page with a link to continue to that url. Impacted configs include 'enable_logout' => true, and 'skip_logout_page' -> true. This issue has been resolved in versions 6.3.1 and 7.0.0.

Basic Information

ID CVE-2025-65954

Source GitHub_M

Published May 18, 2026 at 19:57

Modified May 18, 2026 at 20:28

Affected Product

Vendor simplesamlphp

Product simplesamlphp-module-casserver

Version < 6.3.1

Affected Versions simplesamlphp simplesamlphp-module-casserver < 6.3.1
simplesamlphp simplesamlphp-module-casserver >= 7.0.0-rc1, < 7.0.0

CWE Classification

CWE-601

References

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    "published": "2026-05-18T19:57:07.228Z",
    "modified": "2026-05-18T20:28:06.383Z",
    "type": "cve",
    "title": "SimpleSAMLphp-casserver  has an Open Redirect vulnerability via logout",
    "source": "GitHub_M",
    "references": "https://github.com/simplesamlphp/simplesamlphp-module-casserver/security/advisories/GHSA-cvrm-5hp6-h523\nhttps://github.com/simplesamlphp/simplesamlphp-module-casserver/commit/0462f50f00b3bb300d83067d11b74146a57bb8e0\nhttps://github.com/simplesamlphp/simplesamlphp-module-casserver/commit/fb6c6f1c7b9e757c93c5c306e1d36405e64f6dc5",
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