CVE-2025-65954 — SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS
CVE-2025-65954 — 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)
What This Means For You
- If your environment is affected by CWE-601, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2025-65954 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
2 rules · 6 SIEM formats2 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2025-65954 - SimpleSAMLphp-casserver Logout Redirect
title: CVE-2025-65954 - SimpleSAMLphp-casserver Logout Redirect
id: scw-2026-05-18-ai-1
status: experimental
level: high
description: |
This rule detects the specific logout endpoint of SimpleSAMLphp-casserver combined with the presence of a 'url=' or 'redirect_url=' query parameter, which is indicative of the SSRF vulnerability exploited in CVE-2025-65954. Attackers can leverage this to redirect users to malicious sites after logout.
author: SCW Feed Engine (AI-generated)
date: 2026-05-18
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2025-65954/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/cas/logout'
cs-uri-query|contains:
- 'url='
cs-uri-query|contains:
- 'redirect_url='
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2025-65954 | vulnerability | CVE-2025-65954 |
| CWE-601 | weakness | CWE-601 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 18, 2026 at 23:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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