Deserialization of Untrusted DataWeakness · CWE-502

CVE-2025-69405

CRITICAL · 9.8 CVSS v3.1 Published 2026-02-20
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 Lorem Ipsum | Books & Media Store lorem-ipsum-books-media-store allows Object Injection.This issue affects Lorem Ipsum | Books & Media Store: from n/a through <= 1.2.11.

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 caused by insecure deserialization (use of unserialize() on untrusted data) in the ThemeREX Lorem Ipsum | Books & Media Store WordPress theme. Attackers can craft malicious serialized PHP objects that, when deserialized, trigger magic methods (__destruct, __wakeup, __toString, etc.) to achieve remote code execution or other attacks depending on available classes in the application.

MitigationReplace insecure unserialize() calls with json_decode() or other safe parsing methods; validate all input before processing; update to a patched version if available; audit for vulnerable classes that could be chained in an attack.

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. Verify ThemeREX plugin/theme is installed
    Check your WordPress or site installation for the 'ThemeREX Lorem Ipsum Books & Media Store' plugin or theme. Look in the plugins directory, theme directory, or your site's component inventory.
    Affected if The plugin/theme is not present in your environment.
  2. Determine installed version
    Locate the version information for the ThemeREX Lorem Ipsum Books & Media Store plugin/theme. This is typically found in the plugin/theme header comment in the main PHP file, a readme.txt file, or a version constant within the codebase.
    Affected if The installed version cannot be determined or is 1.2.11 or earlier.
  3. Compare version against affected range
    Compare the installed version number to the affected range: versions through 1.2.11 are vulnerable.
    Affected if Your version is 1.2.11 or any earlier version.
  4. Locate unsafe deserialization code
    Search the ThemeREX plugin/theme source code for calls to unserialize() that process data without prior validation. Look for patterns like unserialize($_POST[...]), unserialize($_COOKIE[...]), or unserialize() on any user-supplied input.
    Affected if Unsafe unserialize() calls handling untrusted input exist in the codebase.
  5. Identify data entry points
    Audit your application's HTTP inputs (POST parameters, cookies, headers, JSON body fields) to determine if serialized PHP data is accepted and passed to the vulnerable unserialize() calls.
    Affected if Your application accepts serialized PHP data from untrusted sources and feeds it to the unsafe unserialize() function.

You are affected if the ThemeREX Lorem Ipsum Books & Media Store plugin/theme version is 1.2.11 or earlier AND your application processes serialized PHP data through unsafe unserialize() calls with untrusted 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

Replace insecure unserialize() calls with json_decode() or other safe parsing methods; validate all input before processing; update to a patched version if available; audit for vulnerable classes that could be chained in an attack.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA3.0 h
17.0 hours of engineering $3,020
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Scan for this in your stack

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dbcve dependency scanner

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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-2025-69405 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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