GtmetrixWordPress extension
CVE-2023-23677
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 · uneditedReflected Cross-Site Scripting (XSS) vulnerability in GTmetrix GTmetrix for WordPress plugin <= 0.4.5 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 · high confidenceReflected Cross-Site Scripting (XSS) vulnerability in the GTmetrix WordPress plugin versions 0.4.5 and below. The vulnerability allows an attacker to inject malicious scripts through unsanitized URL parameters, which are reflected back to the user without proper output encoding.
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
< 0.4.6CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Verify GTmetrix plugin is installedIn WordPress admin, go to Plugins > Installed Plugins and look for 'GTmetrix' in the list. Alternatively, check the wp-content/plugins directory for a folder named 'gtmetrix'.Affected if GTmetrix plugin is present in the WordPress installation
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Identify installed GTmetrix plugin versionIn WordPress admin > Plugins > Installed Plugins, find the GTmetrix plugin and note the version number displayed below the plugin name. If using a file-based check, inspect the main plugin file (usually gtmetrix.php) for the 'Version' header in the plugin comment block.Affected if Version is 0.4.5 or lower (any version below 0.4.6)
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Confirm vulnerability trigger conditionThis is a reflected XSS, meaning the vulnerability occurs when user-supplied URL parameters are echoed back in the page response without sanitization. Test by accessing a GTmetrix plugin page with a crafted parameter (e.g., ?test=scriptalert(1)/script) and checking if the value appears unencoded in the response HTML.Affected if URL parameter values are reflected in the page source without HTML encoding
User is affected if the GTmetrix WordPress plugin version is 0.4.5 or below AND the plugin reflects URL parameters in its output without sanitization.
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 · scoped0.4.6
Upgrade the GTmetrix plugin to a version newer than 0.4.5, or remove the plugin if no update is available. Implement output encoding on user-supplied input and apply WordPress nonces for additional request validation.
0.4.6
- In WordPress admin, navigate to Plugins > Installed Plugins
- Locate the GTmetrix plugin in the list
- If an update is available, click 'Update Now' next to the plugin
- Alternatively, go to Dashboard > Updates and update the GTmetrix plugin from there
- After updating, verify the plugin version is 0.4.6 or higher by checking the plugin details
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Gtmetrix
Scoped from the published advisory
- Consultation1.0 h
- Implementation1.0 h
- Testing1.0 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 $1,200.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-23677 — 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-2023-23677 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