dbcve.org
Quiz And Survey MasterWordPress extension · Expresstech

CVE-2021-36864

MEDIUM · 5.4 CVSS v3.1 Published 2022-10-28
Fix available
A fix is available. Upgrade to after 7.3.4 or later.
See remediation →
58/100
Remediation priority · Elevated
Remotely reachable

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 · unedited
Auth. (editor+) Reflected Cross-Site Scripting (XSS) vulnerability in ExpressTech Quiz And Survey Master plugin <= 7.3.4 on WordPress.

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 confidence

Authenticated (editor+) reflected Cross-Site Scripting (XSS) vulnerability in the ExpressTech Quiz And Survey Master WordPress plugin version 7.3.4 and below. Reflected XSS occurs when user-supplied input is echoed back in the response without proper sanitization, allowing attackers to inject malicious JavaScript that executes in the victim's browser.

MitigationUpdate to the latest version of Quiz And Survey Master if a patch is available; otherwise, restrict the plugin to trusted users only and implement output encoding on user input handling paths.

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
Affected:<= 7.3.4

CVSS 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
Low
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify the Quiz And Survey Master plugin is installed
    Log into WordPress admin and navigate to Plugins > Installed Plugins, or check for the /wp-content/plugins/quiz-master-next/ directory on the server
    Affected if The plugin is listed as active or installed
  2. Check the installed plugin version
    In WordPress admin, go to Plugins > Installed Plugins and find Quiz And Survey Master to view the version number; alternatively, check the version header in the main plugin file (e.g., quiz-master-next.php)
    Affected if The version is 7.3.4 or lower
  3. Identify user accounts with editor or higher privileges
    In WordPress admin, go to Users and review the role assigned to each account; editor, author, and administrator roles all have privileges at or above the editor+ level required for this vulnerability
    Affected if There are user accounts with editor, author, or administrator roles (especially untrusted or compromised accounts)
  4. Confirm the plugin handles user input that could be reflected
    Test the plugin by submitting a quiz or survey response containing a test payload (such as <script>alert('XSS')</script>) in any text field; observe if the input is echoed back in the response page without encoding
    Affected if User-supplied input appears in the page response without proper HTML encoding (the payload executes or displays literally)

You are affected if the Quiz And Survey Master plugin version is 7.3.4 or lower, the plugin is active on your site, and you have users with editor-level or higher privileges whose input could be reflected in the response.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to a release after 7.3.4
Interim mitigation

Update to the latest version of Quiz And Survey Master if a patch is available; otherwise, restrict the plugin to trusted users only and implement output encoding on user input handling paths.

Recommended fix Moderate confidence

Latest version available on wordpress.org (7.3.5 or newer)

  1. Log in to the WordPress admin dashboard
  2. Navigate to Plugins > Installed Plugins
  3. Locate the 'Quiz And Survey Master' (or 'ExpressTech Quiz And Survey Master') plugin
  4. Click 'Update now' if an update is available, or manually download the latest version from wordpress.org and upload it
  5. After updating, verify the plugin is running version 7.3.5 or higher

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
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-36864 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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