8.8

CVE-2026-62107: masteriyo masteriyo - lms Deserialization of Untrusted Data

CVSS: 8.8v3.1HighDeferred
Published 11-09-2026Last modified 11-09-2026
Open JSON

Vulnerability summary

CVE-2026-62107 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in masteriyo masteriyo - lms. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 42.8% of scored vulnerabilities. Fixed in 3.4.1.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.52%
0%100%
Low · +0.23 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-09-2026
    PublishedVulnerability first disclosed.
  2. 11-09-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.52%

Chance of exploitation in the next 30 days

Percentile

43%

Versus all other CVEs

30-day change

+0.23 pp

From 0.29% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.52%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Masteriyo1 product
Wordpress1 product
  • learning-management-system≤ 3.4.0 (fixed in 3.4.1)

2 vendors · 2 products

References

2 links