CVE-2026-42194

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.

PUBLISHED Reserved 2026-04-25 | Published 2026-05-07 | Updated 2026-05-07 | Assigner GitHub_M

Problem types

CWE-918: Server-Side Request Forgery (SSRF)

Product status

References

github.com/...dmidio/security/advisories/GHSA-hcjj-chvw-fmw9 exploit

github.com/...dmidio/security/advisories/GHSA-hcjj-chvw-fmw9

github.com/Admidio/admidio/releases/tag/v5.0.9

cve.org (CVE-2026-42194)

nvd.nist.gov (CVE-2026-42194)

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