CVE-2025-30973 CRITICAL

CVE-2025-30973: WordPress CoSchool LMS plugin <= 1.4.3 - PHP Object Injection Vulnerability

Vendor Codexpert, Inc

Product CoSchool LMS

Weakness CWE-502 · Unsafe deserialization

Published July 16, 2025

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

9.8/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in Codexpert, Inc CoSchool LMS coschool allows Object Injection.This issue affects CoSchool LMS: from n/a through <= 1.4.3.

Explanation of Vulnerability in Simple Terms

02Summary

CoSchool LMS versions 1.4.3 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on the server. The vulnerability exists because the application deserializes untrusted data without proper validation. An attacker can exploit this remotely over the network without any user interaction or special privileges.

What an attacker can do

03Attacker Capabilities

Run their own code on the server, read or modify any data, and take full control of the site.

Potential impact on your site

04Site Impact

Complete compromise of the LMS server, including student data, course content, and user credentials.

Conditions required to exploit

05Prerequisites

Network access to the CoSchool LMS application. No authentication or user interaction required.

Key dates

06Disclosure timeline

July 16, 2025 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-30973 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html

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