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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2025-14044

HIGH · 8.1 CVSS v3.1 Published 2025-12-12
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
90/100
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
The Visitor Logic Lite plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.3 via deserialization of untrusted input from the `lpblocks` cookie. This is due to the `lp_track()` function passing unsanitized cookie data directly to the `unserialize()` function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code granted they can access the WordPress site.

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 · high confidence

The Visitor Logic Lite WordPress plugin (versions up to 1.0.3) contains a PHP Object Injection vulnerability in the lp_track() function, which directly passes unsanitized data from the lpblocks cookie to PHP's unserialize(). This allows unauthenticated attackers to inject arbitrary PHP objects. While no POP chain exists within the plugin itself, a POP chain from another installed plugin or theme could enable remote code execution, file deletion, or data exfiltration.

MitigationUpdate the Visitor Logic Lite plugin to the latest version (if available) or replace the unsafe unserialize() call with a safer alternative like json_decode() after implementing proper input validation on the lpblocks cookie data.

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

CVSS:3.1/AV:N/AC:H/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 Visitor Logic Lite plugin is installed
    Check the WordPress plugins directory (wp-content/plugins/) for a folder named 'visitor-logic-lite' or similar. Look for the main plugin PHP file and inspect the plugin header for the version number.
    Affected if The plugin is installed and the version is 1.0.3 or lower.
  2. Confirm plugin is active
    In the WordPress admin dashboard, navigate to Plugins > Installed Plugins and verify whether Visitor Logic Lite is activated. Alternatively, query the wp_options table for the active_plugins option.
    Affected if The plugin is activated and processing requests.
  3. Locate the vulnerable lp_track function
    Open the main plugin file and search for the function 'lp_track'. Verify that it contains a call to unserialize() that processes the 'lpblocks' cookie without sanitization.
    Affected if The lp_track function exists and contains an unserialize() call on $_COOKIE['lpblocks'] or similar without validation.
  4. Test cookie processing behavior
    Send a request to the site with a crafted 'lpblocks' cookie value. Observe whether the value is processed by the plugin. In a safe test environment, you can inspect the HTTP response or debug logs to confirm the cookie reaches the vulnerable function.
    Affected if The lpblocks cookie is accepted and processed by the plugin without validation.
  5. Check for POP chain sources
    Review all other installed plugins and the active theme for PHP classes with magic methods (__wakeup, __destruct, __toString, etc.) that could form a POP chain. This requires code review of other plugins.
    Affected if A secondary plugin or theme with exploitable magic methods is installed, enabling full RCE via the object injection.

You are affected if Visitor Logic Lite version 1.0.3 or lower is installed and active, with the lp_track function processing the lpblocks cookie via unserialize without validation.

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 Visitor Logic Lite plugin to the latest version (if available) or replace the unsafe unserialize() call with a safer alternative like json_decode() after implementing proper input validation on the lpblocks cookie data.

Recommended fix Moderate confidence

Version 1.0.4 or latest available release

  1. Navigate to the WordPress admin dashboard
  2. Go to Plugins > Installed Plugins
  3. Locate 'Visitor Logic Lite' in the plugin list
  4. Check if an update is available for the plugin
  5. If an update is available, click 'Update Now' to install the latest version
  6. If no update is visible in WordPress, manually download the latest version from the WordPress Plugin Repository and upload it via Plugins > Add New > Upload Plugin

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
  • Testing3.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,750
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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-2025-14044 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
  • No spam, self-promotion, credentials, or personal data