WordPress Masteriyo - LMS plugin <= 3.4.0 - PHP Object Injection vulnerability

published 2026-09-11 58 d ago modified 2026-09-11 58 d ago also EUVD-2026-76212

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits: 0; none known

Unauthenticated PHP Object Injection in Masteriyo - LMS <= 3.4.0 versions.

Patch / fix

fixed in 1

masteriyo Masteriyo - LMS 3.4.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 58 d ago (2026-09-11)

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

masteriyo Masteriyo - LMS

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/learning-management-system/vulnerability/wordpress-masteriyo-lms-plugin-3-4-0-php-o
vdb-entry

Sources

CVE List CVE-2026-62107
NVD CVE-2026-62107

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