Admidio: CSRF on Plugin Install, Uninstall, and Update via Unprotected GET Requests

Exploitation

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

CVSS

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

EPSS

• CVE-2026-53760: 0.17% estimated exploitation activity in the next 30 days; percentile 6.03 (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 modules/plugins.php endpoint handles plugin installation, uninstallation, and update operations via GET requests without CSRF token validation. Because these are top-level navigations, browsers include SameSite=Lax session cookies. An attacker crafts a malicious page that, when an authenticated administrator visits it, triggers arbitrary plugin operations. The uninstall operation executes DROP TABLE SQL scripts and destroys plugin data. Details modules/plugins.php reads the mode (install, uninstall, update) and name parameters directly from $GET: The file contains zero calls to SecurityUtils::validateCsrfToken(). Other administrative operations in the same codebase (such as the save mode in preferences) validate CSRF tokens correctly. Because the operations use GET requests, modern browsers send SameSite=Lax cookies on top-level GET navigations (link clicks, redirects, window.location assignments). A cross-origin page triggers these operations by navigating the browser to…

Published by the source

9 Jul 2026, 13:44 UTC

Last modified by the source

9 Jul 2026, 13:44 UTC

Source last checked

26 Oct 2026, 14:50 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-hm42-q32m-vj4f

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# Patch Next advisory brief: CVE-2026-53760

Advisory: Admidio: CSRF on Plugin Install, Uninstall, and Update via Unprotected GET Requests
IDs: CVE-2026-53760, GHSA-hm42-q32m-vj4f
Record: https://patchnext.com/advisories/cve-2026-53760 (revision 1, source checked 26 Oct 2026, 14:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.2)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist admidio/admidio: affected <= 5.0.11

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

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## 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-hm42-q32m-vj4f (GitHub-reviewed advisory GHSA-hm42-q32m-vj4f lists affected ranges: Packagist admidio/admidio >=0 <=5.0.11)

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