CVE-2025-58644: LTL Freight Quotes Object Injection Flaw

CVE-2025-58644 Overview

CVE-2025-58644 is a PHP Object Injection vulnerability in the LTL Freight Quotes - TQL Edition WordPress plugin by enituretechnology. The flaw stems from deserialization of untrusted data [CWE-502] and affects all plugin versions up to and including 1.2.6. An authenticated attacker with high privileges can submit crafted serialized payloads that the plugin unserializes, triggering PHP object injection. Successful exploitation can lead to arbitrary code execution, data tampering, or denial of service on the WordPress host. The vulnerability is exploitable over the network without user interaction.

Critical Impact
Authenticated object injection in ltl-freight-quotes-tql-edition enables full compromise of confidentiality, integrity, and availability on affected WordPress sites.

Affected Products

enituretechnology LTL Freight Quotes - TQL Edition WordPress plugin
All versions up to and including 1.2.6
WordPress installations using the ltl-freight-quotes-tql-edition plugin

Discovery Timeline

2025-09-03 - CVE CVE-2025-58644 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-58644

Vulnerability Analysis

The plugin processes serialized PHP data from an untrusted source and passes it to unserialize() without validation. PHP's unserialize() reconstructs objects and invokes magic methods such as __wakeup(), __destruct(), and __toString() during deserialization. When attacker-controlled classes or gadget chains exist within the WordPress runtime or loaded plugins, this primitive escalates from object instantiation to arbitrary code execution or file operations.

The issue is classified under [CWE-502] Deserialization of Untrusted Data. Exploitation requires high privileges, which limits the attacker population but does not reduce post-exploitation impact. An attacker meeting the privilege requirement can pivot to full site takeover, plant persistence, or exfiltrate WordPress database contents.

Root Cause

The root cause is unsafe use of PHP unserialize() on input that originates from a request context the plugin treats as trusted. The plugin lacks an allow-list of expected classes (the allowed_classes option introduced in PHP 7) and performs no integrity check on the serialized payload before deserialization.

Attack Vector

The vulnerability is reachable over the network through the WordPress administrative interface used by the plugin. An authenticated user with sufficient privileges submits a crafted serialized string to a plugin endpoint or option that is later deserialized. The payload references gadget classes present in WordPress core, the plugin, or other installed plugins. When deserialized, the gadget chain executes attacker-controlled logic. Refer to the Patchstack Vulnerability Report for advisory details.

Detection Methods for CVE-2025-58644

Indicators of Compromise

Unexpected serialized PHP strings beginning with O: or a: in plugin request parameters or stored options.
Web server access logs showing POST requests to ltl-freight-quotes-tql-edition admin endpoints with unusually large or binary-looking payloads.
New or modified PHP files under wp-content/ not associated with a known plugin update.
Outbound connections from the WordPress host to unfamiliar IPs immediately after plugin administrative actions.

Detection Strategies

Inspect HTTP request bodies destined for the plugin for serialized PHP object markers such as O:8:"stdClass" or chained a:N:{...} structures.
Audit the WordPress options table for serialized values written by the plugin that contain unexpected class names.
Correlate authenticated admin sessions with subsequent PHP process spawns or file writes to detect post-deserialization activity.

Monitoring Recommendations

Enable PHP error and access logging at the web tier and forward logs to a centralized analytics platform for query.
Monitor file integrity across wp-content/plugins/ltl-freight-quotes-tql-edition/ and the broader WordPress install.
Alert on creation of new administrator accounts or modifications to scheduled tasks (wp_cron) following plugin interaction.

How to Mitigate CVE-2025-58644

Immediate Actions Required

Identify all WordPress sites running ltl-freight-quotes-tql-edition version 1.2.6 or earlier and prioritize remediation.
Restrict access to the WordPress admin interface using IP allow-lists, VPN, or web application firewall rules.
Rotate credentials for high-privilege WordPress accounts and audit recent administrative activity for signs of misuse.
Place a virtual patch or WAF rule that blocks serialized PHP payloads in plugin request parameters.

Patch Information

At the time of publication, no fixed version is referenced in the available NVD or Patchstack advisory data. Monitor the Patchstack Vulnerability Report and the vendor's plugin page for an updated release beyond 1.2.6.

Workarounds

Deactivate and remove the ltl-freight-quotes-tql-edition plugin until a patched version is available.
Limit administrative accounts to the minimum number required and enforce multi-factor authentication on those accounts.
Deploy a web application firewall rule that inspects POST bodies for PHP serialization signatures targeting plugin endpoints.
Run WordPress behind a reverse proxy that rejects requests with serialized payloads in non-expected fields.

bash

# Example WAF/ModSecurity rule to block PHP serialized objects in plugin requests
SecRule REQUEST_URI "@contains ltl-freight-quotes-tql-edition" \
  "chain,id:1058644,phase:2,deny,status:403,msg:'Possible PHP object injection (CVE-2025-58644)'"
  SecRule REQUEST_BODY "@rx O:[0-9]+:\"[A-Za-z_\\\\]+\":[0-9]+:\{" \
    "t:none"