Quiz And Survey MasterWordPress extension · Expresstech
CVE-2023-51507
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedMissing Authorization vulnerability in ExpressTech Quiz And Survey Master.This issue affects Quiz And Survey Master: from n/a through 8.1.16.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceMissing authorization vulnerability in Quiz And Survey Master WordPress plugin allows attackers to perform certain actions without proper capability checks. The specific endpoints or actions lack verification that the user has appropriate permissions to access or modify data.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
Quiz And Survey MasterWordPress extension
< 8.1.17CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify plugin is installedNavigate to WordPress admin dashboard > Plugins > Installed Plugins. Look for 'Quiz And Survey Master' or 'Expresstech Quiz And Survey Master' in the list.Affected if Plugin is present and active in the WordPress installation
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Check installed versionIn the plugins list, locate Quiz And Survey Master and note the version number displayed beneath the plugin name. Alternatively, check the plugin files in /wp-content/plugins/quiz-master-next/ or similar path for a version file.Affected if Version is lower than 8.1.17 (for example, 8.1.16, 8.1.15, earlier versions)
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Identify user role configurationNavigate to WordPress admin > Users > All Users. Review the roles assigned to different users, particularly looking for subscriber, contributor, or other low-privileged roles that have access to quiz/survey functionality.Affected if Site has multiple user roles beyond just administrators, especially users with subscriber, contributor, or editor roles who interact with quizzes
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Inspect capability assignmentsIf role management plugins are used, or via database inspection of wp_options table for role capabilities, verify whether non-administrator users have permissions to create, edit, or delete quizzes.Affected if Non-administrator users have elevated quiz/survey capabilities that should require admin-level authorization
Environment is affected if Quiz And Survey Master plugin is installed with a version below 8.1.17 and the site has multiple user roles with access to quiz functionality.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped8.1.17
Update Quiz And Survey Master to the latest version (8.1.17 or later) which includes proper authorization checks. If immediate update is not possible, review user roles and capabilities assigned on the site.
8.1.17
- Log in to WordPress admin dashboard
- Navigate to Plugins > Installed Plugins
- Find Quiz And Survey Master in the plugin list
- Click 'Update now' if an update is available, or manually upload version 8.1.17 or later
- Verify the plugin is updated to version 8.1.17 or higher
- Test quiz and survey functionality to ensure proper operation
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Quiz And Survey Master
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,512.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-51507 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-51507 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data