CVE-2026-41661: Admidio vulnerable to reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

CVE-2026-41661 · Severity: low · CVSS 3.1 · Published 2026-04-29

Admidio vulnerable to reflected XSS in msg_window.php via Square Bracket to HTML Tag Conversion

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

Quick answers

Is CVE-2026-41661 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-41661 being exploited in the wild.
How severe is CVE-2026-41661?
Low severity, with a CVSS score of 3.1, published 29 April 2026.
Which products and versions are affected?
admidio/admidio (Packagist) ECOSYSTEM:introduced=0,fixed=5.0.9.
Is there a fix for CVE-2026-41661?
Yes. admidio/admidio (Packagist): upgrade to 5.0.9 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-41661?
Check whether you run 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.

How to fix

  • admidio/admidio (Packagist): upgrade to 5.0.9 or later
    composer require admidio/admidio:^5.0.9

Affected products

  • admidio/admidio (Packagist) ECOSYSTEM:introduced=0,fixed=5.0.9

Identifiers

  • CVE-2026-41661
  • GHSA-gq27-fc8w-vcmp

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