Deserialization of Untrusted DataWeakness · CWE-502

CVE-2024-31094

HIGH · 8.5 CVSS v3.1 Published 2024-03-31
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
91/100
Remediation priority · Urgent
Remotely reachable Zero-click

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 · unedited
Deserialization of Untrusted Data vulnerability in Filter Custom Fields & Taxonomies Light.This issue affects Filter Custom Fields & Taxonomies Light: from n/a through 1.05.

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 confidence

The Filter Custom Fields & Taxonomies Light WordPress plugin (versions up to 1.05) contains a deserialization vulnerability where untrusted data is processed without proper validation. This type of flaw can potentially allow authenticated attackers to execute arbitrary code depending on available PHP classes in the application context.

MitigationUpdate to the latest version of the plugin if a patch is available; otherwise disable the plugin immediately and seek an alternative solution. Verify that all deserialization operations use safe functions with proper whitelist validation.

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
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Check plugin version in WordPress admin
    Navigate to Plugins > Installed Plugins in the WordPress admin dashboard. Locate 'Filter Custom Fields & Taxonomies Light' and read the version number displayed below the plugin name.
    Affected if The listed version is 1.05 or any version number lower than 1.05.
  2. Verify plugin file version header
    Access the plugin directory via FTP or file manager. Open the main plugin file (typically filter-custom-fields-taxonomies-light.php) and locate the 'Version' header comment at the top of the file.
    Affected if The Version header shows 1.05 or lower.
  3. Confirm plugin is active
    In WordPress admin under Plugins > Installed Plugins, check whether 'Filter Custom Fields & Taxonomies Light' shows as 'Active' rather than 'Inactive' or 'Must-Use'.
    Affected if The plugin is active and the version is 1.05 or lower.
  4. Check for authenticated user access
    Review user roles and capabilities in WordPress. Determine if any user accounts exist with permissions to access plugin features that handle serialized data processing.
    Affected if Any authenticated user with subscriber-level or higher access exists while the vulnerable plugin version is active.

A user is affected if the Filter Custom Fields & Taxonomies Light plugin is installed at version 1.05 or below and is currently active, allowing authenticated attackers to trigger unsafe deserialization operations.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update to the latest version of the plugin if a patch is available; otherwise disable the plugin immediately and seek an alternative solution. Verify that all deserialization operations use safe functions with proper whitelist validation.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2024-31094 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-31094 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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