5.3

CVE-2026-8279: masteriyo masteriyo lms – lms course builder, quizzes & certificates Missing Authorization

CVSS: 5.3v3.1MediumDeferred
Published 07-09-2026Last modified 08-09-2026
Open JSON

Vulnerability summary

CVE-2026-8279 is a medium (CVSS 5.3) Missing Authorization vulnerability in masteriyo masteriyo lms – lms course builder, quizzes & certificates. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 33% of scored vulnerabilities. Fixed in 2.2.1.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.40%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-09-2026
    PublishedVulnerability first disclosed.
  2. 08-09-2026
    Last modifiedVulnerability information updated.

Description

The Masteriyo LMS plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the 'delete_item_permissions_check' function in the CourseProgressItemsController in all versions up to, and including, 2.2.0. This makes it possible for unauthenticated attackers to delete arbitrary course progress records belonging to any student.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

33%

Versus all other CVEs

30-day change

+0.17 pp

From 0.24% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.40%

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≤ 2.2.0 (fixed in 2.2.1)

2 vendors · 2 products

References

5 links