What’s Vulnerable › Vulnerabilities

CVE-2025-13646: Modula 2.13.1 - 2.13.2 - Authenticated (Author+) Arbitrary File Upload via Race Condition

• Severity: medium (CVSS 6.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-03 · updated 2026-10-18
• Weakness: CWE-434

Description

The Modula Image Gallery plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'ajax_unzip_file' function in versions 2.13.1 to 2.13.2. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files with race condition on the affected site's server which may make remote code execution possible.

Affected products

• wpchill Modula Image Gallery – Photo Grid & Video Gallery: from 2.13.1 before 2.13.3 — fixed in 2.13.3

How to fix

Upgrade to a fixed version: wpchill Modula Image Gallery – Photo Grid & Video Gallery 2.13.3. Check the vendor advisory for mitigations.

References

• https://github.com/WPChill/modula-lite/blob/master/includes/admin/class-modula-gallery-upload.php#L1103
• https://github.com/WPChill/modula-lite/commit/90c8eb982f71b31584d9be9359e3b594e03927d7
• https://plugins.trac.wordpress.org/changeset/3395701/modula-best-grid-gallery#file5
• https://plugins.trac.wordpress.org/changeset/3407949/modula-best-grid-gallery
• https://www.wordfence.com/threat-intel/vulnerabilities/id/59ee0ca2-846d-4ae8-ad19-7c3826861aeb?source=cve

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