CVE-2026-1235 in WP eCommerce Plugin
Summary
by MITRE • 02/11/2026
The WP eCommerce WordPress plugin through 3.15.1 unserializes user input via ajax actions, which could allow unauthenticated users to perform PHP Object Injection when a suitable gadget is present on the blog.
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Analysis
by VulDB Data Team • 02/12/2026
The vulnerability identified as CVE-2026-1235 resides within the WP eCommerce WordPress plugin version 3.15.1 and earlier, representing a critical security flaw that exploits improper input validation mechanisms. This issue manifests through the plugin's handling of ajax actions where user-supplied data undergoes deserialization processes without adequate sanitization or authentication checks. The vulnerability classifies under CWE-502 as it involves unsafe deserialization of untrusted data, making it particularly dangerous in web application contexts where user input can be manipulated to execute arbitrary code.
The technical exploitation of this vulnerability occurs when unauthenticated attackers leverage the plugin's ajax endpoints to inject malicious serialized PHP objects. When the plugin processes these objects through unserialize() functions, it can trigger object injection attacks if suitable gadgets exist within the application's codebase or its dependencies. This type of attack pattern aligns with ATT&CK technique T1566.002 which covers spearphishing attachments and T1059.007 for scripting languages, as the injection allows for arbitrary code execution through serialized object manipulation. The vulnerability's impact is amplified by the fact that no authentication is required to exploit it, making it accessible to anyone with access to the affected WordPress site.
The operational consequences of this vulnerability are severe as it provides attackers with potential full system compromise capabilities. Successful exploitation could enable attackers to execute arbitrary commands on the web server, potentially leading to data breaches, unauthorized access to sensitive information, or complete server takeover. The vulnerability affects all WordPress installations using the WP eCommerce plugin version 3.15.1 or earlier, regardless of the hosting environment or additional security measures in place. The attack surface is particularly concerning because the vulnerable endpoints are typically accessible through standard web traffic without requiring special credentials or privileged access.
Mitigation strategies for CVE-2026-1235 should prioritize immediate plugin updates to versions that address the deserialization vulnerability. System administrators must also implement input validation controls at the application level to prevent unsanitized data from reaching the unserialize() functions. Network-level protections such as web application firewalls can help detect and block malicious serialization attempts, though these should not be relied upon as the sole defense mechanism. Additionally, implementing proper access controls and monitoring for unusual ajax activity can help identify potential exploitation attempts. The remediation process should include thorough code review of the plugin's ajax handling mechanisms and consideration of alternative serialization approaches that avoid direct user input deserialization. Organizations should also conduct comprehensive vulnerability assessments to identify any other potential gadget chains within their WordPress installations that could be exploited in similar fashion.