CVE-2026-42194

MEDIUM

6.8

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.

CVE Details

CVSS v3.1 Score6.8

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionNONE

Published5/7/2026

Last Modified5/7/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-918

References

https://github.com/Admidio/admidio/releases/tag/v5.0.9(security-advisories@github.com)

https://github.com/Admidio/admidio/security/advisories/GHSA-hcjj-chvw-fmw9(security-advisories@github.com)

https://github.com/Admidio/admidio/security/advisories/GHSA-hcjj-chvw-fmw9(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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