CVE-2026-42194
Medium
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.
SeverityMedium
CVSS6.8
Exploit probability—
ProductAdmidio/admidio
PublishedMay 7, 2026
First seenMay 7, 2026
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Update
- admidio/admidio5.0.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| admidio/admidioPackagist | v < 5.0.9 | 5.0.9 |
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