CVE-2026-24358Public exploitNetwork attack vector

Cross-quiz question tampering via unchecked AJAX handlers

Published Jan 22, 2026 · Updated Jan 22, 2026

Missing authorization in Quiz And Survey Master 10.3.3 and earlier allows remote authenticated users to alter other users' quiz questions. Multiple question-management AJAX handlers trust submitted question IDs without checking quiz ownership or the edit_others_qsm_quizzes capability. Contributor-level access is sufficient to unlink, duplicate, or delete questions in quizzes the attacker does not own, limiting impact to plugin-managed quiz content.

CVSS severity4.3
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Quiz And Survey Master 10.3.3 and earlier allows remote authenticated users to alter other users' quiz questions. Multiple question-management AJAX handlers trust submitted question IDs without checking quiz ownership or the edit_others_qsm_quizzes capability. Contributor-level access is sufficient to unlink, duplicate, or delete questions in quizzes the attacker does not own, limiting impact to plugin-managed quiz content.

The record

CVE
CVE-2026-24358
Published
Jan 22, 2026
Updated
Jan 22, 2026
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-862, CAPEC-180, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 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=n/a <=<= 10.3.3 changes=[{"at":"10.3.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=n/a <=<= 10.3.3 changes=[{"at":"10.3.4","status":"unaffected"}]

Published CVSS scores

4.3PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-862Missing Authorization
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1565.001Stored Data Manipulation

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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