Open Redirect Affecting admidio/admidio package, versions <5.0.9
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-ADMIDIOADMIDIO-16322401
- published30 Apr 2026
- disclosed29 Apr 2026
- creditUnknown
Introduced: 29 Apr 2026
CVE-2026-41670 (opens in a new tab)How to fix?
Upgrade admidio/admidio to version 5.0.9 or higher.
Overview
admidio/admidio is a free open source user management system for websites of organizations and groups.
Affected versions of this package are vulnerable to Open Redirect in the handleSSORequest process. An attacker can obtain sensitive user identity attributes and impersonate users by submitting a crafted SAML AuthnRequest with a malicious AssertionConsumerServiceURL, causing the SAML response to be sent to an attacker-controlled endpoint. This is only exploitable if the attacker knows the Entity ID of a registered service provider client, which is often publicly accessible.