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GtmetrixWordPress extension

CVE-2023-32503

MEDIUM · 6.1 CVSS v3.1 Published 2023-08-08
Fix available
A fix is available. Upgrade to after 0.4.6 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges

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
Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in GTmetrix GTmetrix for WordPress plugin <= 0.4.6 versions.

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

Unauthenticated reflected cross-site scripting (XSS) vulnerability in the GTmetrix WordPress plugin versions 0.4.6 and below allows attackers to inject malicious JavaScript through unsanitized user input that gets reflected back in HTTP responses.

MitigationUpdate the GTmetrix WordPress plugin to a version beyond 0.4.6 to obtain the patched release; alternatively, deploy a WAF rule to filter malicious XSS payloads in HTTP requests until the update can be applied.

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
GtmetrixWordPress extension
Affected:<= 0.4.6

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

CVSS:3.1/AV:N/AC:L/PR:N/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. Locate the GTmetrix plugin installation
    Check the WordPress plugins directory at wp-content/plugins/gtmetrix/ or view installed plugins in the WordPress admin dashboard under Plugins > Installed Plugins
    Affected if The gtmetrix directory or plugin entry is not found, the plugin is not installed and not affected
  2. Identify the installed GTmetrix plugin version
    In WordPress admin, go to Plugins > Installed Plugins and find GTmetrix - the version number is displayed below the plugin name. Alternatively, open wp-content/plugins/gtmetrix/gtmetrix.php and look for the 'Version' header in the plugin comment block
    Affected if Unable to determine the version means you cannot confirm if the installed version is vulnerable
  3. Compare your version to the affected range
    Compare the installed version number against the affected range: version 0.4.6 or lower is within the vulnerable range. Versions greater than 0.4.6 are not affected
    Affected if Your installed version is 0.4.6 or any lower number (e.g., 0.4.5, 0.4.0, 0.3.0) - this indicates the vulnerability is present
  4. Verify the plugin is active
    In WordPress admin under Plugins > Installed Plugins, confirm the GTmetrix plugin shows as 'Active' - an inactive plugin would not process the vulnerable HTTP requests
    Affected if The plugin is active and your version is 0.4.6 or below, the environment is affected and the XSS vulnerability can be triggered

You are affected if the GTmetrix WordPress plugin is installed, active, and the version is 0.4.6 or lower.

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 0.4.6
Interim mitigation

Update the GTmetrix WordPress plugin to a version beyond 0.4.6 to obtain the patched release; alternatively, deploy a WAF rule to filter malicious XSS payloads in HTTP requests until the update can be applied.

Recommended fix Moderate confidence

GTmetrix plugin version 0.4.7 or later

  1. Check your WordPress site's installed GTmetrix plugin version in Plugins > Installed Plugins
  2. If the installed version is 0.4.6 or lower, navigate to Dashboard > Updates or go to Plugins > Add New > Upload to install the latest version
  3. After upgrading, verify the fix by checking the GTmetrix plugin page for version confirmation
  4. Test that the GTmetrix functionality still works correctly after the update

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Gtmetrix Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,080
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,328.

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-2023-32503 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