CVE-2026-14310Public exploitNetwork attack vector

Cross-course Q&A disclosure via mismatched object authorization

Published Jul 30, 2026 · Updated Jul 30, 2026

Authorization bypass in Themeum Tutor LMS before 4.0.0 allows remote authenticated users to read and write cross-course Q&A threads. The tutor_qna_create_update AJAX action authorizes the supplied course_id but retrieves the separately supplied question_id without confirming that the question belongs to that course. Subscriber-level access to any course and a front-end nonce suffice to disclose another course's Q&A content and add a reply to its private thread.

CVSS severity5.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Themeum Tutor LMS before 4.0.0 allows remote authenticated users to read and write cross-course Q&A threads. The tutor_qna_create_update AJAX action authorizes the supplied course_id but retrieves the separately supplied question_id without confirming that the question belongs to that course. Subscriber-level access to any course and a front-end nonce suffice to disclose another course's Q&A content and add a reply to its private thread.

The record

CVE
CVE-2026-14310
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
Themeum
Product
Tutor LMS
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 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=0 <4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Themeum · Tutor LMSversion=0 <4.0.0

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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 exploitPublished

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

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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