CVE-2026-42194

Medium

Open

TLP:CLEAR

NVD CVE.org

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Description

Admidio is an open-source user management solution. Prior to version 5.0.9, the incomplete SSRF fix in Admidio's fetch_metadata.php validates the resolved IP address but passes the original hostname-based URL to curl_init(), leaving a DNS rebinding TOCTOU window that allows redirecting requests to internal IPs. This issue has been patched in version 5.0.9.

Details

CVSS Score: 6.8
EPSS Score ⓘ: 0.24%

14.7th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Confidence: 90%
Published: May 7, 2026

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