Wp CompressWordPress extension · Wpcompress
CVE-2025-47479
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 · uneditedWeak Authentication vulnerability in AresIT WP Compress wp-compress-image-optimizer allows Authentication Abuse.This issue affects WP Compress: from n/a through <= 6.30.30.
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 confidenceWeak authentication vulnerability in the WP Compress (wp-compress-image-optimizer) WordPress plugin allows authentication abuse, enabling attackers to potentially bypass authentication mechanisms and gain unauthorized access to administrative functions of the plugin.
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
Wp CompressWordPress extension
< 6.30.31CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 WP Compress plugin is installedNavigate to WordPress admin dashboard > Plugins > Installed Plugins, or check /wp-content/plugins/ directory for wp-compress-image-optimizer folderAffected if WP Compress plugin is present in the WordPress installation
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Check installed plugin versionIn WordPress admin, go to Plugins > Installed Plugins > WP Compress and view the version number displayed beneath the plugin nameAffected if Version is less than 6.30.31 or version cannot be determined (plugin may be outdated or corrupted)
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Inspect plugin authentication endpointsReview plugin files in /wp-content/plugins/wp-compress-image-optimizer/ for PHP files handling admin actions or AJAX endpoints, particularly those with 'admin', 'auth', 'login', or 'api' in the filenameAffected if Files contain authentication logic that does not properly validate WordPress nonces or user capabilities
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Check for unauthorized admin accountsGo to WordPress Users > All Users and review list for unfamiliar accounts with Administrator role, especially any created around the time the plugin was activeAffected if Unknown admin accounts exist that were not intentionally created by site administrators
The environment is affected if the WP Compress plugin is installed with a version lower than 6.30.31 and the plugin's administrative functions are accessible without proper authentication validation.
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 · scoped6.30.31
Update WP Compress to the latest patched version immediately upon release; if no patch is available, disable the plugin and migrate to an alternative image optimization solution.
6.30.31
- Log in to the WordPress admin dashboard
- Navigate to Plugins > Installed Plugins
- Locate the WP Compress (wp-compress-image-optimizer) plugin
- Check the current version number to confirm it is <= 6.30.30
- Click Update Now or navigate to the plugin's update option
- Verify the update completes successfully
- Confirm the updated version shows 6.30.31 or higher
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Wp Compress
Scoped from the published advisory
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 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 $2,272.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-47479 — 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-2025-47479 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