CoSchool LMS <= 1.4.3 - Unauthenticated PHP Object Injection

Deserialization of Untrusted Data
CVE CVE-2025-30973
CVSS High (8.1)
Publicly Published July 7, 2025
Last Updated July 17, 2025
Researcher Drew Webber (mcdruid)
Description

The CoSchool LMS – A complete Learning Management System to Create and Sell Your Courses Online plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.3 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

References

1 affected software package

Software Type Plugin
Software Slug coschool (view on wordpress.org)
Patched? No
Affected Version
  • <= 1.4.3
Patched Version
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