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Masteriyo LMS CVE-2026-8279

| EUVDEUVD-2026-72368 MEDIUM
Missing Authorization (CWE-862)
2026-09-07 Wordfence GHSA-jv59-f2rj-m7r3
5.3
CVSS 3.1 · Vendor: Wordfence
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Severity by source

Vendor (Wordfence) PRIMARY
5.3 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
vuln.today AI
8.2 HIGH

PR:N confirmed by missing capability check; I:H because attacker can delete any arbitrary student's records with no restriction; A:L because mass deletion renders course progress data unavailable.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

3
Metadata Corrected
Sep 07, 2026 - 13:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 07, 2026 - 13:21 vuln.today
CVE Published
Sep 07, 2026 - 12:29 cve.org
MEDIUM 5.3

DescriptionCVE.org

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.

AnalysisAI

Unauthenticated deletion of arbitrary student course progress records is possible in the Masteriyo LMS WordPress plugin through version 2.2.0. The delete_item_permissions_check function in the CourseProgressItemsController REST API controller omits any WordPress capability check, allowing any unauthenticated network attacker to permanently erase course progress belonging to any enrolled student. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Vulnerability AssessmentAI

Exploitation No special conditions - remote unauthenticated exploitation against any WordPress installation running Masteriyo LMS plugin version 2.2.0 or earlier where the WordPress REST API is publicly accessible (the default for all standard WordPress deployments). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N, score 5.3) correctly identifies the network-reachable, unauthenticated, zero-interaction nature of this flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade the Masteriyo LMS plugin to version 2.2.1 or later, which is the first release expected to contain the capability check fix (exact patched version not independently confirmed from the provided references - verify against the WordPress.org plugin changelog or Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/d317d40b-2b99-408b-b445-1a789df3c958). … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-8279 vulnerability details – vuln.today

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