CVE-2026-53760: Admidio CSRF in plugin management module

CVE-2026-53760 · Severity: medium · CVSS 5.2 · Published 2026-09-04

Admidio is a free open-source user management system for websites. A security flaw allows an attacker to trick an administrator into visiting a malicious website that silently triggers the installation, update, or removal of software plugins. If a plugin is uninstalled this way, it can lead to permanent data loss by deleting database tables without the administrator's consent.

Technologies: Admidio, admidio/admidio (Packagist). Vendors: Admidio, Packagist.

Quick answers

Is CVE-2026-53760 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-53760 being exploited in the wild.
How severe is CVE-2026-53760?
Medium severity, with a CVSS score of 5.2, published 4 September 2026.
Which products and versions are affected?
Admidio <= 5.0.11; admidio/admidio (Packagist) <= 5.0.11, ECOSYSTEM:introduced=0,last_affected=5.0.11.
Is there a fix for CVE-2026-53760?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-53760 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-53760?
Check whether you run Admidio or admidio/admidio (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Cross-Site Request Forgery (CSRF) vulnerability exists in `modules/plugins.php` because it performs state-changing operations (install, uninstall, update) using GET requests without validating CSRF tokens. Since these operations are triggered via top-level GET navigations, modern browsers include `SameSite=Lax` session cookies, allowing a cross-origin attacker to execute these actions if an authenticated administrator visits a malicious page. The `doUninstall()` function is particularly impactful as it executes SQL scripts that include `DROP TABLE` statements. The vulnerability is rooted in the lack of `SecurityUtils::validateCsrfToken()` calls in the affected component.

Affected products

  • Admidio Admidio <= 5.0.11

Identifiers

  • CVE-2026-53760
  • GHSA-hm42-q32m-vj4f

Timeline

  • 2026-06-02: disclosed: Reported to Admidio by aisafe.io
  • 2026-07-09: advisory: GitHub Advisory published

References

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