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.
Published: 2026-05-18
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-cvrm-5hp6-h523 SimpleSAMLphp casserver: Open Redirect in logout
History

Wed, 27 May 2026 14:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:simplesamlphp:simplesamlphp-casserver:*:*:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:simplesamlphp-casserver:7.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:simplesamlphp_casserver:7.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:simplesamlphp-module-casserver:*:*:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:simplesamlphp-module-casserver:7.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:simplesamlphp-module-casserver:7.0.0:rc2:*:*:*:*:*:*
Vendors & Products Simplesamlphp simplesamlphp-casserver
Simplesamlphp simplesamlphp Casserver

Thu, 21 May 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Simplesamlphp simplesamlphp-casserver
Simplesamlphp simplesamlphp Casserver
CPEs cpe:2.3:a:simplesamlphp:simplesamlphp-casserver:*:*:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:simplesamlphp-casserver:7.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:simplesamlphp:simplesamlphp_casserver:7.0.0:rc1:*:*:*:*:*:*
Vendors & Products Simplesamlphp simplesamlphp-casserver
Simplesamlphp simplesamlphp Casserver
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Tue, 19 May 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Simplesamlphp
Simplesamlphp simplesamlphp-module-casserver
Vendors & Products Simplesamlphp
Simplesamlphp simplesamlphp-module-casserver

Mon, 18 May 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 18 May 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title SimpleSAMLphp-casserver has an Open Redirect vulnerability via logout
Weaknesses CWE-601
References
Metrics cvssV3_0

{'score': 4.7, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N'}


Subscriptions

Simplesamlphp Simplesamlphp-module-casserver
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-18T20:28:06.383Z

Reserved: 2025-11-18T16:14:56.693Z

Link: CVE-2025-65954

cve-icon Vulnrichment

Updated: 2026-05-18T20:26:13.101Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-18T20:16:36.980

Modified: 2026-06-17T09:56:08.560

Link: CVE-2025-65954

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-21T23:15:17Z

Weaknesses