CVE-2025-53194 Overview
CVE-2025-53194 is a deserialization of untrusted data vulnerability in the Crocoblock JetEngine plugin for WordPress. The flaw allows code injection in all versions up to and including 3.7.0. An authenticated attacker with low privileges can submit crafted serialized payloads that the plugin processes without proper validation. Successful exploitation leads to remote code execution on the underlying WordPress host. The issue is tracked under [CWE-82] and stems from unsafe handling of serialized input within the plugin's data processing routines. JetEngine is widely deployed on sites built with the Elementor page builder, expanding the attack surface across WordPress installations that rely on dynamic content workflows.
Critical Impact
Authenticated attackers can achieve remote code execution by submitting crafted serialized payloads to vulnerable JetEngine installations, leading to full site compromise.
Affected Products
- Crocoblock JetEngine plugin for WordPress
- JetEngine versions from n/a through 3.7.0
- WordPress sites using JetEngine with Elementor integrations
Discovery Timeline
- 2025-08-20 - CVE-2025-53194 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-53194
Vulnerability Analysis
The vulnerability resides in JetEngine's processing of serialized PHP objects supplied through plugin endpoints. The plugin invokes deserialization routines on attacker-controlled input without enforcing allow-lists or signature verification. PHP's unserialize() function instantiates objects and triggers magic methods such as __wakeup() and __destruct() during the deserialization process. When combined with reachable gadget chains in WordPress core or other installed plugins, this primitive escalates to arbitrary code execution. The attack requires low-privilege authentication, which subscriber-level accounts on many WordPress sites can satisfy. Once executed, the payload runs in the context of the PHP worker process, granting access to the database, filesystem, and any secrets stored on the host.
Root Cause
The root cause is unsafe deserialization of attacker-supplied data, classified under [CWE-82]. JetEngine accepts serialized input without validating its structure, type, or origin before passing it to PHP's native deserialization routines. The plugin lacks gadget-chain mitigations such as restricting allowed_classes in unserialize() calls.
Attack Vector
The attack vector is network-based and requires an authenticated session with low privileges. An attacker submits a crafted serialized payload to a vulnerable JetEngine endpoint. The deserialization process instantiates a gadget chain that executes arbitrary PHP code. Exploitation complexity is elevated because the attacker must identify a reachable gadget chain in the target's plugin and theme stack. Refer to the Patchstack WordPress Vulnerability advisory for additional technical context.
Detection Methods for CVE-2025-53194
Indicators of Compromise
- Unexpected outbound connections from the PHP worker process to unfamiliar IP addresses or domains following requests to JetEngine endpoints
- New or modified PHP files in wp-content/uploads/, wp-content/plugins/, or theme directories without corresponding administrative activity
- WordPress access logs containing POST requests with serialized payload markers such as O: or a: targeting JetEngine routes
- Creation of unauthorized administrator accounts or modifications to user roles in the WordPress database
Detection Strategies
- Inspect web server and WordPress request logs for unusually large POST bodies sent to JetEngine AJAX or REST endpoints by low-privilege users
- Monitor for PHP child processes spawning shell interpreters such as sh, bash, or python originating from the web server user
- Deploy file integrity monitoring on the WordPress installation to flag changes to plugin, theme, and upload directories
Monitoring Recommendations
- Enable verbose logging on the WordPress instance and forward logs to a centralized SIEM for correlation
- Alert on authentication events that create or elevate WordPress accounts outside of approved change windows
- Track plugin version inventory across managed WordPress sites to identify hosts still running JetEngine 3.7.0 or earlier
How to Mitigate CVE-2025-53194
Immediate Actions Required
- Update JetEngine to the patched release published after version 3.7.0 on every WordPress site in the environment
- Audit WordPress user accounts and remove unused low-privilege accounts that could be leveraged to satisfy the authentication requirement
- Review recent file changes and database modifications on sites running vulnerable JetEngine versions to identify prior exploitation
Patch Information
Crocoblock has released a fixed version of JetEngine that addresses the deserialization flaw. Administrators should upgrade beyond version 3.7.0 immediately. Consult the Patchstack WordPress Vulnerability advisory for the specific fixed release and remediation details.
Workarounds
- Restrict access to WordPress registration and authentication endpoints to trusted networks until patching is complete
- Deploy a web application firewall rule that blocks requests containing PHP serialized object markers to JetEngine endpoints
- Disable the JetEngine plugin on affected sites if immediate patching is not feasible
# Configuration example: list and update JetEngine via WP-CLI
wp plugin list --name=jet-engine --fields=name,status,version
wp plugin update jet-engine
wp plugin verify-checksums jet-engine
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
