CVE-2025-32071
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 · uneditedImproper Input Validation vulnerability in The Wikimedia Foundation Mediawiki - Wikidata Extension allows Cross-Site Scripting (XSS) from widthheight message via ImageHandler::getDimensionsString()This issue affects Mediawiki - Wikidata Extension: from 1.39 through 1.43.
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 confidenceImproper input validation in the Wikidata Extension's ImageHandler::getDimensionsString() function allows injection of malicious scripts through the widthheight message parameter, enabling stored XSS attacks when image dimensions are rendered.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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 checksWork through these to decide whether this CVE applies to you.
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Locate Wikidata Extension installationCheck for the Wikidata extension directory in your MediaWiki 'extensions' folder, typically at extensions/Wikibase or extensions/Wikidata, and look for the composer.json or extension.json file to identify the installed version.Affected if The Wikidata Extension is present and the version is at or below 1.43.
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Verify ImageHandler component existsSearch for the file ImageHandler.php within the extension directories, specifically in the includes or handlers subdirectories of the Wikidata Extension.Affected if The ImageHandler::getDimensionsString() function exists in the installed version.
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Identify image dimension rendering usageSearch code templates and pages that call getDimensionsString() or display the widthheight message parameter, typically in image-related special pages or upload forms.Affected if The widthheight message parameter is processed and rendered without sanitization in your wiki pages.
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Check if parameter is user-controllableReview whether untrusted user input (such as malicious widthheight values) can be passed to the getDimensionsString function through URL parameters, form inputs, or API calls.Affected if User-supplied values for widthheight can reach the vulnerable function without validation.
You are affected if the Wikidata Extension is installed at version 1.43 or below and the widthheight parameter can accept unsanitized user input that gets rendered in image dimension displays.
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.
From vendor dataImplement proper input validation and output encoding on the widthheight message parameter in ImageHandler::getDimensionsString(); upgrade to a patched version beyond 1.43.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-32071 — 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-2025-32071 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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- 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
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