Admidio Vulnerable to SSRF and Local File Read via Unrestricted URL Fetch in SSO Metadata Endpoint

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-32812: 0.44% estimated exploitation activity in the next 30 days; percentile 37.89 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The SSO metadata fetch endpoint at modules/sso/fetchmetadata.php accepts an arbitrary URL via $GET['url'], validates it only with PHP's FILTERVALIDATEURL, and passes it directly to filegetcontents(). FILTERVALIDATEURL accepts file://, http://, ftp://, data://, and php:// scheme URIs. An authenticated administrator can use this endpoint to read arbitrary local files via the file:// wrapper (Local File Read), reach internal services via http:// (SSRF), or fetch cloud instance metadata. The full response body is returned verbatim to the caller. Details Vulnerable Code File: D:/bugcrowd/admidio/repo/modules/sso/fetchmetadata.php, lines 9-34 FILTERVALIDATEURL Does Not Block Dangerous Schemes PHP's FILTERVALIDATEURL is a format validator, not a security allowlist. It accepts any syntactically valid URL regardless of scheme or destination. The following schemes all pass validation and are handled by filegetcontents(): | Scheme | Impact | |--------|--------| | file:///etc/passwd |…

Published by the source

16 Mar 2026, 21:17 UTC

Last modified by the source

20 Mar 2026, 21:19 UTC

Source last checked

26 Oct 2026, 14:38 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-6j68-gcc3-mq73

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# Patch Next advisory brief: CVE-2026-32812

Advisory: Admidio Vulnerable to SSRF and Local File Read via Unrestricted URL Fetch in SSO Metadata Endpoint
IDs: CVE-2026-32812, GHSA-6j68-gcc3-mq73
Record: https://patchnext.com/advisories/cve-2026-32812 (revision 1, source checked 26 Oct 2026, 14:38 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: admidio/admidio 5.0.7. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist admidio/admidio: affected >= 5.0.0, <= 5.0.6; fixed in 5.0.7

## Suggested inspection (read-only)
- Packagist admidio/admidio: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on admidio/admidio.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-6j68-gcc3-mq73 (GitHub-reviewed advisory GHSA-6j68-gcc3-mq73 lists affected ranges: Packagist admidio/admidio >=5.0.0 <=5.0.6)

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