WordPress CoSchool LMS plugin <= 1.4.3 - PHP Object Injection Vulnerability

published 2025-07-16 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-21611

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 15 mo ago (2025-07-16)

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Codexpert, Inc CoSchool LMS

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/Wordpress/Plugin/coschool/vulnerability/wordpress-coschool-lms-1-4-3-php-object-injection-vulnerabil
vdb-entry

Sources

CVE List CVE-2025-30973
NVD CVE-2025-30973

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary