CVE-2025-68047: 
WordPress vulnerability analysis and mitigation

CVE-2025-68047 is a Deserialization of Untrusted Data vulnerability (PHP Object Injection) in the Arraytics Eventin WordPress plugin (wp-event-solution). It affects Eventin versions up to and including 4.1.3, initially disclosed as affecting through 4.1.1 before being updated on April 1, 2026. The vulnerability was first received from Patchstack on January 22, 2026, with the CVSS score added by CISA-ADP on January 28, 2026. It carries a CVSS v3.1 base score of 8.8 (High) (Patchstack, Red Hat).

The vulnerability is classified as CWE-502 (Deserialization of Untrusted Data), enabling PHP Object Injection (CAPEC-586). An authenticated attacker with low privileges can supply crafted serialized data to the plugin, which is deserialized without adequate validation, allowing the attacker to instantiate arbitrary PHP objects. Depending on available PHP classes (gadget chains) present in the WordPress environment, this can be leveraged to achieve remote code execution, file manipulation, or other critical impacts (Patchstack, Red Hat).

Successful exploitation can result in full compromise of the affected WordPress site, with high impact to confidentiality, integrity, and availability. An authenticated low-privileged attacker could steal sensitive data, manipulate site content or database records, and potentially disrupt service availability. If a suitable gadget chain exists in the environment, remote code execution may be achievable, enabling lateral movement to the underlying server (Red Hat, Patchstack).

As of the available data, there is no public proof-of-concept exploit and no confirmed in-the-wild exploitation of CVE-2025-68047. The EPSS score is approximately 0.024% (0.000240), indicating a low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Exploitation requires authentication with at least low-level privileges, which somewhat limits the attack surface (Red Hat, Feedly).

1. Reconnaissance: Identify WordPress sites running the Eventin plugin (wp-event-solution) version 4.1.3 or earlier using tools like WPScan or Shodan queries for the plugin's known file paths.
2. Authentication: Obtain a low-privileged account on the target WordPress site (e.g., subscriber or contributor role).
3. Identify vulnerable endpoint: Locate the plugin functionality that accepts and processes serialized PHP data without proper validation.
4. Craft malicious payload: Construct a serialized PHP object payload exploiting an available gadget chain present in the WordPress/plugin environment (e.g., using tools like PHPGGC to generate gadget chains targeting common WordPress libraries).
5. Submit payload: Send the crafted serialized payload to the vulnerable endpoint via an authenticated HTTP request.
6. Achieve objective: Depending on the gadget chain used, achieve remote code execution, arbitrary file write/delete, or data exfiltration on the target server (Patchstack).

• Network: Authenticated HTTP requests to Eventin plugin endpoints containing serialized PHP data (e.g., strings beginning with O: or a: in POST body parameters); unexpected outbound connections from the web server process.
• Logs: WordPress access logs showing unusual POST requests to Eventin plugin endpoints from low-privileged user accounts; PHP error logs referencing unexpected class instantiation or unserialize() calls.
• File System: Newly created or modified PHP files in the WordPress installation directory or uploads folder; presence of web shells or backdoors.
• Process: Unexpected child processes spawned by the web server (e.g., bash, curl, wget) following requests to Eventin plugin endpoints.

Site administrators should immediately upgrade the Eventin plugin (wp-event-solution) to a version newer than 4.1.3. Until a patch is applied, restrict plugin access to trusted users only, enforce strong authentication controls, and consider disabling the plugin if it is not essential. Deploying a Web Application Firewall (WAF) capable of detecting and blocking malicious PHP serialization payloads (e.g., Wordfence, Patchstack) is recommended as an interim measure (Patchstack, Red Hat).

Wordfence included CVE-2025-68047 in its weekly WordPress vulnerability report for the week of January 19–25, 2026, highlighting it as a notable PHP object injection issue in the Eventin plugin. Patchstack, the assigning CNA, published the vulnerability details and the CISA-ADP contributed the CVSS scoring. No significant broader media coverage or notable researcher commentary beyond standard vulnerability reporting has been identified (Wordfence, Patchstack).