CVE-2024-39636
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 CodeSolz Better Find and Replace.This issue affects Better Find and Replace: from n/a through 1.6.1.
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 confidenceThis is a Deserialization of Untrusted Data vulnerability in the CodeSolz Better Find and Replace WordPress plugin. The vulnerability allows an attacker to exploit unsafe deserialization operations (likely via PHP unserialize() or similar) to inject malicious PHP objects, potentially leading to remote code execution through PHP Object Injection attacks.
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
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/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 Better Find and Replace plugin is installedLog into WordPress admin panel and navigate to Plugins > Installed Plugins. Look for 'Better Find and Replace' by CodeSolz in the list. Alternatively, check the file /wp-content/plugins/better-find-and-replace/ exists on the server.Affected if The plugin is installed and active on the WordPress site
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Identify installed plugin versionIn WordPress admin, click on the plugin name to view details and find the version number. Alternatively, check the main plugin file header in /wp-content/plugins/better-find-and-replace/better-find-and-replace.php for the 'Version' comment tag.Affected if The installed version is lower than the patched version (check WordPress plugin repository for latest version)
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Check if deserialization functionality is accessibleExamine plugin source code for usage of unserialize(), eval(), or similar dangerous functions that process user-supplied data. Look in the main plugin PHP files for any AJAX endpoints or form handlers that accept serialized data input.Affected if The plugin processes untrusted input through unserialize() or similar unsafe functions without proper validation
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Review plugin configuration and exposureCheck plugin settings pages in WordPress admin for any features that accept serialized data, import/export functionality, or 'find and replace' operations that might process serialized content. Inspect network requests when using the plugin.Affected if Plugin features that accept serialized PHP data are enabled or accessible to users
A user is affected if the Better Find and Replace plugin is installed with a vulnerable version that contains unsafe deserialization of user-supplied 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.
From vendor dataUpdate the Better Find and Replace plugin to the latest version immediately. If no patched version is available, disable the plugin until a fix is released, and consider deploying a WAF rule to block deserialization-related attack patterns.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-39636 — 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-2024-39636 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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