CVE-2026-22453
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 ThemeREX Pets Club petclub allows Object Injection.This issue affects Pets Club: from n/a through <= 2.3.
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 ThemeREX Pets Club plugin allows attackers to inject malicious PHP objects by supplying untrusted serialized data. This object injection can potentially lead to remote code execution, file operations, or other attacks depending on available gadget chains in the application and surrounding environment.
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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Identify if ThemeREX Pets Club plugin is installedCheck the WordPress plugins directory for the ThemeREX Pets Club plugin files, typically located in wp-content/plugins/ or via wp-cli plugin list commandAffected if The plugin files exist in the plugins directory
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Determine the installed plugin versionCheck the plugin's main PHP file for the Version header in the plugin comment block, or check readme.txt for the version numberAffected if Version cannot be confirmed as patched or is within an affected version range
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Verify the plugin handles serialized dataSearch plugin PHP files for unserialize() function calls, particularly where input comes from user-supplied data such as $_POST, $_GET, or $_REQUEST parametersAffected if The plugin contains unserialize() calls processing external input
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Check for deserialization entry pointsInspect AJAX handlers and form processing files for deserialization of data passed through request parameters, especially looking for patterns like unserialize($_POST['...'])Affected if Untrusted input is directly passed to unserialize() without validation
A user is affected if ThemeREX Pets Club plugin is installed, contains vulnerable deserialization code, and processes untrusted serialized input from external sources.
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 dataUpgrade to a patched version of ThemeREX Pets Club that properly validates and sanitizes deserialized data, or implement input validation to reject untrusted serialized data at the application boundary.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-22453 — 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-2026-22453 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