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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2026-32507

MEDIUM · 5.4 CVSS v3.1 Published 2026-03-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
60/100
Remediation priority · Elevated
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 Elated-Themes Leroux leroux allows Object Injection.This issue affects Leroux: from n/a through < 1.4.

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 Leroux WordPress theme from Elated-Themes contains a PHP Object Injection vulnerability due to insecure deserialization of untrusted data. Attackers can potentially exploit this by supplying malicious serialized PHP objects, which could lead to remote code execution if suitable 'gadget chains' exist in the application or installed plugins.

MitigationUpdate the Leroux theme to version 1.4 or later, which should contain the patch fixing the insecure deserialization. If immediate update is not possible, audit the codebase for unserialize() calls handling 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
None
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

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. Verify Leroux theme is installed
    Navigate to wp-content/themes/ in your WordPress installation directory and check for a folder named 'leroux' or similar. Alternatively, in WordPress admin go to Appearance > Themes to list installed themes.
    Affected if The Leroux theme by Elated-Themes is present in the themes directory, regardless of whether it is currently activated.
  2. Determine the installed theme version
    Open the file wp-content/themes/leroux/style.css and locate the 'Version:' field in the theme header comment at the top of the file. Compare this version number to the fixed version 1.4.
    Affected if The version listed in style.css is lower than 1.4 (for example: 1.0, 1.1, 1.2, 1.3).
  3. Search for insecure deserialization in theme files
    Use grep or a file search tool to scan PHP files in the wp-content/themes/leroux/ directory for occurrences of the string 'unserialize('
    Affected if Any PHP file in the theme contains an unserialize() call, especially if it processes data from HTTP requests (GET, POST, COOKIE parameters).
  4. Inspect how unserialize calls handle user input
    Open each PHP file containing unserialize() and trace whether data passed into the function originates from user-controlled sources such as $_GET, $_POST, $_COOKIE, or database fields that could contain user-supplied values.
    Affected if User input or untrusted data from request parameters is passed directly to unserialize() without validation or sanitization.
  5. Check for active plugins that could provide gadget chains
    Review installed WordPress plugins in wp-content/plugins/ as they may contain additional PHP classes that could be chained with the object injection for remote code execution.
    Affected if Plugins are installed that contain classes with magic methods (__wakeup, __destruct, __call) that could be triggered by the injected object.

You are affected if the Leroux theme version is below 1.4 and any theme PHP files contain unserialize() calls that process untrusted user input from HTTP requests.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update the Leroux theme to version 1.4 or later, which should contain the patch fixing the insecure deserialization. If immediate update is not possible, audit the codebase for unserialize() calls handling user input and replace with safe alternatives like json_decode().

Recommended fix Moderate confidence

Leroux version 1.4 or later

  1. Create a complete backup of your WordPress site (database and files) before making any changes
  2. Download the Leroux theme version 1.4 or later from a trusted source (theme developer or official marketplace)
  3. Navigate to Appearance > Themes in your WordPress admin dashboard
  4. Deactivate the current Leroux theme
  5. Delete the old Leroux theme files
  6. Install the new Leroux theme version 1.4 or later
  7. Activate the new version
  8. Verify the theme is functioning correctly and check that all pages load without errors

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,272.

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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-2026-32507 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
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