CVE-2025-24671
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 · uneditedDeserialization of Untrusted Data vulnerability in Pdfcrowd Dev Team Save as PDF save-as-pdf-by-pdfcrowd allows Object Injection.This issue affects Save as PDF: from n/a through <= 4.4.0.
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 confidenceA deserialization vulnerability in the Save as PDF plugin by Pdfcrowd allows attackers to inject malicious PHP objects via untrusted data. This object injection could potentially lead to remote code execution depending on available gadget chains in the application.
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
- 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 Pdfcrowd Save as PDF plugin is installedCheck your CMS/plugin directory for the Pdfcrowd plugin files, or look for the plugin in your site's plugin listAffected if The plugin is present and active on the site
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Determine the installed plugin versionCheck the plugin's main PHP file or version metadata file for the version number; compare it against the fixed version 4.4.0Affected if The installed version is lower than 4.4.0
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Confirm the plugin handles user-supplied dataReview the plugin configuration to verify it accepts URLs or content from users for PDF conversionAffected if The plugin is configured to process untrusted input for PDF generation
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Inspect server logs for deserialization activitySearch access and error logs for patterns indicating deserialization attempts, such as serialized PHP objects in request parametersAffected if Suspicious serialized data appears in request logs
The environment is affected if the Pdfcrowd Save as PDF plugin is installed with a version below 4.4.0 and is configured to process user-supplied input for PDF conversion.
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 to a version beyond 4.4.0 to obtain the security patch. If immediate upgrade is not feasible, restrict network access to the affected endpoint and monitor for suspicious deserialization activity.
Update to the latest version of save-as-pdf-by-pdfcrowd (version 4.5.0 or later if available; verify current latest on wordpress.org)
- 1. Check the current version of the Save as PDF (save-as-pdf-by-pdfcrowd) plugin installed on your WordPress site
- 2. Navigate to WordPress admin dashboard > Plugins > Installed Plugins
- 3. If the plugin shows version 4.4.0 or lower, update to the latest available version immediately
- 4. After updating, verify the new version number in the plugins list to confirm the update was successful
- 5. Test the PDF generation functionality to ensure the plugin continues to work correctly after the update
- 6. Review the site for any signs of exploitation (unexpected files, admin accounts, etc.) as this was an Object Injection vulnerability
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 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-2025-24671 — 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-2025-24671 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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