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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2025-49417

CRITICAL · 9.8 CVSS v3.1 Published 2025-07-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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 BestWpDeveloper WooCommerce Product Multi-Action Woo-product-multiaction allows Object Injection.This issue affects WooCommerce Product Multi-Action: from n/a through <= 1.3.

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 confidence

The WooCommerce Product Multi-Action plugin <= 1.3 contains a deserialization vulnerability where untrusted data is processed without proper validation, allowing attackers to inject malicious PHP objects. This object injection can potentially lead to remote code execution if suitable gadget chains exist in the WordPress/WooCommerce environment.

MitigationUpdate to the latest patched version immediately; if no patch exists, remove or disable the plugin until a fix is available, as this critical vulnerability can be exploited unauthenticated.

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 checks

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

  1. Confirm plugin installation
    Check the WordPress plugins directory for the WooCommerce Product Multi-Action plugin folder, typically at /wp-content/plugins/woocommerce-product-multi-action/ or via WP-CLI: wp plugin list --name='woocommerce-product-multi-action'
    Affected if The plugin folder exists in the WordPress plugins directory
  2. Identify installed version
    Read the main plugin file (usually index.php or main php file) in the plugin folder and locate the version comment/header, or run: grep -i 'Version:' /wp-content/plugins/woocommerce-product-multi-action/*.php
    Affected if The reported version is 1.3 or lower, or no version is found (indicating an old unversioned install)
  3. Verify plugin is active
    Check WordPress database wp_options table for active_plugins option, or run: wp plugin list --status=active --name='woocommerce-product-multi-action'
    Affected if The plugin appears in the list of active plugins

If the WooCommerce Product Multi-Action plugin is installed, active, and version 1.3 or lower, your environment is likely affected by this unauthenticated deserialization vulnerability.

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 patched version immediately; if no patch exists, remove or disable the plugin until a fix is available, as this critical vulnerability can be exploited unauthenticated.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,840
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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-2025-49417 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
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