Deserialization of Untrusted DataWeakness · CWE-502

CVE-2025-69079

CRITICAL · 9.8 CVSS v3.1 Published 2026-01-22
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 ThemeREX Sound | Musical Instruments Online Store musicplace allows Object Injection.This issue affects Sound | Musical Instruments Online Store: from n/a through <= 1.6.9.

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

A deserialization vulnerability in the ThemeREX Sound | Musical Instruments Online Store theme (versions up to 1.6.9) allows attackers to inject PHP objects via untrusted serialized data, potentially leading to remote code execution if exploitable classes exist in the application or loaded plugins.

MitigationUpdate the theme to the latest patched version immediately; if no patch is available, disable the theme and replace with a currently supported theme, or implement input validation to prevent untrusted data from reaching PHP unserialize() calls.

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. Identify if ThemeREX musicplace theme is installed
    Check wp-content/themes/ directory for a theme folder named 'musicplace', 'musical-instruments-online-store', or similar ThemeREX theme directories. Look for style.css with ThemeREX branding.
    Affected if The ThemeREX musicplace theme folder exists in the WordPress themes directory.
  2. Determine the installed theme version
    Open the theme's style.css file and locate the 'Version:' header in the CSS comment block at the top, or check theme.json for the 'version' field.
    Affected if The version is at or below the patched version (if known) or the vulnerable code pattern exists regardless of version.
  3. Locate the vulnerable unserialize() call
    Search theme PHP files for the pattern 'unserialize(' using grep or a file search. Focus on files handling user input such as $_GET, $_POST, $_REQUEST, or AJAX handlers.
    Affected if Code contains 'unserialize()' that processes input from request parameters without sanitization.
  4. Verify user-controlled input reaches unserialize()
    Examine the code around the unserialize() call. Trace the parameter source - if it comes directly from $_GET, $_POST, or any request parameter without validation, the flaw is exploitable.
    Affected if The variable passed to unserialize() is derived from user input (e.g., $_REQUEST['theme'], $_GET['data']) without sanitization.
  5. Check for PHP Object Injection exploitability
    If unserialize() with user input exists, verify there are no __wakeup, __destruct, or __toString magic methods in the theme or active plugins that could be chained for code execution.
    Affected if The theme or loaded classes contain exploitable magic methods that could be triggered via injected PHP objects.

If the ThemeREX musicplace theme is installed and contains unserialize() processing user input without validation, the environment is affected by this 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 the theme to the latest patched version immediately; if no patch is available, disable the theme and replace with a currently supported theme, or implement input validation to prevent untrusted data from reaching PHP unserialize() calls.

Have this fixed Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
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Scan for this in your stack

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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-2025-69079 in production — separate from our analysis above.

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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
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  • Version or environment caveats, and links to real fixes
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