CVE-2026-42194

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.

CVSS v3.1

6.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CVSS v3.1

6.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

EPSS

0.24% chance of exploitation in the next 30 days, 14th percentile

Published

2026-05-07

Proof-of-concept exploits (1)

• advisories/GHSA-hcjj-chvw-fmw9

References

• CVE Record
• NVD entry

Related

• CVE-2026-42191
• CVE-2026-42199
• CVE-2026-4219
• CVE-2026-4220
• CVE-2026-42188
• CVE-2026-42203