CVE-2025-53481
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 · uneditedUncontrolled Resource Consumption vulnerability in Wikimedia Foundation Mediawiki - IPInfo Extension allows Excessive Allocation.This issue affects Mediawiki - IPInfo Extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
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 confidenceUncontrolled Resource Consumption (excessive allocation) vulnerability in MediaWiki IPInfo Extension allows attackers to trigger excessive memory or resource allocation, potentially causing denial of service through resource exhaustion.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 IPInfo extension is installedCheck your MediaWiki extensions directory for the IPInfo extension folder, or look for 'IPInfo' in your LocalSettings.php file under $wgExtensionFunctions or $wgExtensionsLoadedAffected if The IPInfo extension folder exists in your extensions directory or IPInfo is loaded in LocalSettings.php
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Identify installed IPInfo versionCheck the IPInfo extension's composer.json or extension.json file in the IPInfo directory for the 'version' field, or look at the release tags in the extension's git repositoryAffected if The installed version is earlier than 1.39.13, 1.42.7, or 1.43.2 (or the version cannot be determined and IPInfo is present)
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Confirm IPInfo feature is activeCheck LocalSettings.php for any IPInfo-related configuration such as $wgIPInfoCacheEnabled, $wgIPInfoGeoIpLookup, or calls to IPInfoHooks::onParserFirstCallInitAffected if IPInfo configuration variables are present and the extension is actively processing IP information requests
You are affected if the IPInfo extension is installed, its version is earlier than 1.39.13, 1.42.7, or 1.43.2, and the IPInfo functionality is enabled to process IP data.
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 · scopedUpgrade MediaWiki IPInfo Extension to version 1.39.13, 1.42.7, or 1.43.2 or later to obtain the patched version.
MediaWiki 1.39.13+ (if on 1.39.x), 1.42.7+ (if on 1.42.x), or 1.43.2+ (if on 1.43.x)
- Identify the currently installed MediaWiki version by checking the includes/Version.php file or the Special:Version page
- Identify if the IPInfo extension is installed and enabled
- Determine which version branch is in use (1.39.x, 1.42.x, or 1.43.x)
- For MediaWiki 1.39.x: Upgrade to version 1.39.13 or later
- For MediaWiki 1.42.x: Upgrade to version 1.42.7 or later
- For MediaWiki 1.43.x: Upgrade to version 1.43.2 or later
- After upgrade, verify the IPInfo extension is working correctly
- Test that the resource consumption issue is resolved by confirming reasonable memory/CPU usage when IPInfo features are accessed
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 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-2025-53481 — 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-2025-53481 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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