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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2025-53586

HIGH · 8.8 CVSS v3.1 Published 2025-11-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
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 NooTheme WeMusic noo-wemusic allows Object Injection.This issue affects WeMusic: from n/a through <= 1.9.1.

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 confidence

This is a PHP Object Injection vulnerability in the WeMusic WordPress theme caused by unsafe deserialization (likely using PHP unserialize() on untrusted user input). Object injection can lead to remote code execution if the application has vulnerable classes that can be chained for RCE, or other impacts like file operations depending on available gadget chains.

MitigationUpdate WeMusic to the latest patched version. If no patch exists, audit the codebase for unsafe unserialize() calls on user input and replace with safe alternatives like json_decode().

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

CVSS:3.1/AV:N/AC:L/PR:L/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 WeMusic theme is installed
    Navigate to WordPress admin > Appearance > Themes, or inspect /wp-content/themes/ directory for weMusic theme folder
    Affected if WeMusic theme is present in the WordPress installation
  2. Identify installed WeMusic version
    Check theme style.css header for 'Version:' value, or look for version constant in theme functions.php
    Affected if Version is older than the latest patched version (version number comparison needed against vendor release notes)
  3. Search for unsafe unserialize() calls
    Grep the WeMusic theme folder for 'unserialize(' pattern: grep -r "unserialize(" /wp-content/themes/wemusic/
    Affected if Any unserialize() call is found that processes user-supplied data
  4. Trace user input to unserialize() calls
    Review code around unserialize() calls to determine if parameters come from $_GET, $_POST, $_REQUEST, or database fields that can be controlled by users
    Affected if User-controllable input reaches unserialize() function without sanitization
  5. Check for vulnerable gadget chains
    Review all included PHP files in the theme for classes with magic methods (__wakeup, __destruct, __call, __invoke) that could be chained for RCE
    Affected if Vulnerable classes exist that could be exploited via object injection

A user is affected if WeMusic theme is installed, runs an outdated version, and contains unserialize() calls that process user-supplied input.

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 WeMusic to the latest patched version. If no patch exists, audit the codebase for unsafe unserialize() calls on user input and replace with safe alternatives like json_decode().

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing4.0 h
  • Review / QA2.0 h
13.0 hours of engineering $2,280
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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-2025-53586 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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