CVE-2026-82851Network attack vectorHinoki check available

Instructor-level post disclosure via unrestricted course export

Published Sep 12, 2026 · Updated Sep 12, 2026

Information disclosure in Masteriyo LMS 1.14.0 through 3.4.0 allows remote authenticated users to export arbitrary WordPress posts. The course export handler accepts requested record IDs without confirming ownership or restricting them to course records, then returns full content and metadata. Instructor-level access is sufficient to retrieve other instructors' private or draft courses and unrelated posts.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Information disclosure in Masteriyo LMS 1.14.0 through 3.4.0 allows remote authenticated users to export arbitrary WordPress posts. The course export handler accepts requested record IDs without confirming ownership or restricting them to course records, then returns full content and metadata. Instructor-level access is sufficient to retrieve other instructors' private or draft courses and unrelated posts.

The record

CVE
CVE-2026-82851
Published
Sep 12, 2026
Updated
Sep 12, 2026
Vendor
Query Solutions Ltd.
Product
Masteriyo LMS
Classifications
T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.14.0 <3.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Query Solutions Ltd. · Masteriyo LMSversion=1.14.0 <3.4.1

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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