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PatchSiren cyber security CVE debrief

CVE-2025-9637 Expresstech CVE debrief

The Quiz and Survey Master plugin for WordPress has a vulnerability allowing unauthorized access and modification of data. This issue, present in all versions up to 10.3.1, enables unauthenticated attackers to view unpublished, private, or password-protected quizzes and submit file responses. The vulnerability is caused by missing capability and status checks on multiple functions. This could allow attackers to access sensitive quiz content and submit malicious file responses, potentially leading to data breaches or further exploitation.

Vendor
Expresstech
Product
Quiz And Survey Master
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-01-06
Original CVE updated
2026-09-30
Advisory published
2026-01-06
Advisory updated
2026-09-30

Who should care

WordPress administrators, security teams, and users with publicly accessible quizzes or surveys should assess exposure and prioritize mitigation. This includes reviewing current plugin versions, restricting access to sensitive content, and monitoring for suspicious activity related to quiz and survey submissions. Security teams should verify the current plugin version and exposure, and prioritize patching or mitigation for publicly accessible WordPress to

Why it matters

CVE-2025-9637 allows unauthorized access and data modification in the Quiz and Survey Master plugin for WordPress. Defenders should prioritize patching, restrict access to sensitive content, and monitor for suspicious activity.

  • Potential unauthorized viewing of sensitive quiz or survey content
  • Possible submission of malicious file responses through quizzes
  • Need for verification of current plugin version and exposure
  • Priority patching or mitigation required for publicly accessible WordPress installations

Technical summary

The Quiz and Survey Master plugin for WordPress is vulnerable to unauthorized access and modification of data due to missing capability and status checks. This allows unauthenticated attackers to view unpublished, private, or password-protected quizzes and submit file responses. The vulnerability affects all versions up to 10.3.1 and could lead to data breaches or further exploitation if not mitigated. Defenders should prioritize patching or mitigating this vulnerability, especially for WordPress installations with publicly accessible quizzes or surveys.

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability, especially for WordPress installations with publicly accessible quizzes or surveys.

Recommended defensive actions

  • Patch or upgrade the Quiz and Survey Master plugin to version 10.3.2 or later
  • Restrict access to sensitive quizzes and surveys
  • Monitor for suspicious activity related to quiz and survey submissions
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The vulnerability is confirmed by the CVE Program and NVD records. Details are provided by Wordfence security researchers. The CVE record was published on 2026-01-06T10:15:48.940Z and has not been modified since then. The vulnerability affects all versions of the Quiz and Survey Master plugin up to 10.3.1. Security researchers have verified the issue and provided details to the CVE Program.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-9637 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-9637

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2025-9637 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-9637

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.2.6/php/classes/class-qmn-quiz-manager.php

    [email protected] - Product

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.2.6/php/rest-api.php

    [email protected] - Product

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.