CVE-2025-69002: OneLife Theme Object Injection Vulnerability

CVE-2025-69002 Overview

CVE-2025-69002 is a PHP Object Injection vulnerability affecting the designthemes OneLife WordPress theme. The flaw stems from deserialization of untrusted data [CWE-502] and impacts all versions of OneLife up to and including 3.9. Authenticated attackers with low privileges can supply crafted serialized payloads that the theme passes to PHP's unserialize() function. Successful exploitation can lead to arbitrary object instantiation, which may chain into remote code execution, file operations, or data tampering when suitable gadget chains exist in the WordPress runtime.

Critical Impact
Network-reachable, low-privilege attackers can trigger PHP object injection in OneLife <= 3.9, with potential for full site compromise through gadget chain exploitation.

Affected Products

designthemes OneLife WordPress theme, versions up to and including 3.9
WordPress installations using the OneLife theme on shared or production hosting
Sites with authenticated low-privilege users (subscribers, contributors) where the vulnerable code paths are reachable

Discovery Timeline

2026-01-22 - CVE-2025-69002 published to NVD
2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-69002

Vulnerability Analysis

The vulnerability is a PHP Object Injection issue caused by insecure deserialization of attacker-controlled input. When user-supplied data reaches PHP's unserialize() without validation, the language reconstructs arbitrary objects and invokes magic methods such as __wakeup(), __destruct(), and __toString(). Attackers leverage these methods through gadget chains in WordPress core, plugins, or the theme itself to perform unintended actions.

The impact varies based on available gadgets in the runtime. Common outcomes include arbitrary file read or write, SQL query manipulation, server-side request forgery, and remote code execution. The theme exposes the sink to authenticated users, so an attacker needs valid credentials at minimum.

Root Cause

The root cause is unsafe handling of serialized PHP data within the OneLife theme code. The theme passes externally influenced strings to unserialize() instead of using safe formats such as JSON. This pattern is classified under [CWE-502] Deserialization of Untrusted Data and is a recurring weakness in WordPress themes that store complex data structures in options, post meta, or request parameters.

Attack Vector

Exploitation occurs over the network against the WordPress HTTP interface. An authenticated attacker submits a request containing a serialized PHP object payload to a vulnerable endpoint exposed by the OneLife theme. The server deserializes the payload, instantiating attacker-chosen classes. The attacker then chains existing classes to escalate from object injection to code execution or persistent compromise. See the Patchstack WordPress Vulnerability Report for additional context.

Detection Methods for CVE-2025-69002

Indicators of Compromise

HTTP request bodies or query parameters containing serialized PHP markers such as O: followed by a class name and length, or a: for arrays
Unexpected PHP errors referencing __wakeup, __destruct, or class instantiation in web server logs
New or modified PHP files under wp-content/themes/onelife/ or wp-content/uploads/ following authenticated requests
Outbound network connections from the web server to unfamiliar hosts shortly after POST requests to OneLife endpoints

Detection Strategies

Inspect WordPress access logs for authenticated POST requests targeting OneLife theme handlers and AJAX actions
Apply web application firewall rules that flag PHP serialization patterns in request parameters
Hash and monitor theme directories for unauthorized file changes
Correlate WordPress user session activity with file system and process telemetry to identify post-authentication tampering

Monitoring Recommendations

Enable verbose PHP error logging and forward logs to a centralized analytics platform
Alert on php or php-fpm processes spawning shell utilities such as sh, bash, or curl
Monitor the WordPress wp_options table for unexpected serialized values written by low-privilege accounts
Track creation of new administrator accounts and changes to theme or plugin files

How to Mitigate CVE-2025-69002

Immediate Actions Required

Identify all WordPress sites running the designthemes OneLife theme and confirm the installed version
Disable or replace the OneLife theme on sites running version 3.9 or earlier until a patched release is available
Restrict registration and reduce privileges of untrusted accounts that can reach authenticated theme endpoints
Audit existing user accounts, theme files, and scheduled tasks for signs of prior exploitation

Patch Information

At the time of publication, the Patchstack advisory lists OneLife versions up to and including 3.9 as affected. Administrators should consult the vendor and Patchstack for the latest fixed version and upgrade promptly once released.

Workarounds

Deploy WAF signatures that block PHP serialization payloads (O:, a:, s: patterns) in request parameters reaching OneLife endpoints
Remove or replace the OneLife theme with an alternative until a vendor patch is published
Enforce strong authentication and disable open registration to limit the attacker population
Apply least-privilege configuration to the PHP runtime, including disable_functions for dangerous APIs and restricted open_basedir

bash

# Example WAF rule snippet to block PHP serialized payloads in POST bodies
SecRule REQUEST_BODY "@rx (?:^|&|=)O:[0-9]+:\"[A-Za-z_\\\\]+\":[0-9]+:" \
    "id:1006902,phase:2,deny,status:403,log,msg:'Possible PHP Object Injection (CVE-2025-69002)'"