CVE-2025-31430
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 themeton The Business allows Object Injection. This issue affects The Business: 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 · high confidenceA PHP Object Injection vulnerability exists in the themeton The Business WordPress theme (versions up to 1.6.1) due to insecure deserialization of untrusted data. Attackers can craft malicious serialized PHP objects to achieve remote code execution, potentially compromise the entire WordPress installation, and execute arbitrary system commands.
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 The Business theme is installedIn WordPress admin, go to Appearance > Themes, or check /wp-content/themes/ directory for a folder named 'the-business' or similar themeton theme folderAffected if The themeton The Business theme folder exists in the WordPress themes directory
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Check the installed theme versionOpen the theme's style.css file (usually in /wp-content/themes/the-business/style.css) and look for the 'Version:' header in the file comment at the topAffected if The version listed is 1.6.1 or lower (including 1.6.1)
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Locate deserialization functions in theme filesSearch all PHP files in the theme directory for 'unserialize(' calls. Run: grep -r "unserialize(" /path/to/wp-content/themes/the-business/Affected if Any PHP file in the theme contains an unserialize() call that processes user-controlled input without validation
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Identify input sources reaching deserializationExamine the code around any found unserialize() calls to determine if $_GET, $_POST, $_COOKIE, or similar PHP superglobals are passed to itAffected if User-supplied data (request parameters, cookies, or other HTTP input) flows directly into an unserialize() call without sanitization
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Verify the vulnerable code is accessibleConfirm the vulnerable PHP file is accessible via web requests. Check if the code runs on front-end or admin pages, or check for any AJAX handlers or form processors that use the vulnerable deserializationAffected if The page or endpoint containing the insecure deserialization is reachable without authentication or is accessible to the site's users
A user is affected if The Business theme version is 1.6.1 or lower AND the theme contains unserialize() calls that process untrusted HTTP input without 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.
From vendor dataUpdate The Business theme to the latest patched version immediately. If no patch is available, remove or replace the theme. For interim protection, deploy a WAF rule to block serialized object payloads and monitor for deserialization-related attack signatures.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-31430 — 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-2025-31430 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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