CVE-2023-2500 in Go Pricing Plugin
Summary
by MITRE • 05/25/2023
The Go Pricing - WordPress Responsive Pricing Tables plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 3.3.19 via deserialization of untrusted input from the 'go_pricing' shortcode 'data' parameter. This allows authenticated attackers, with subscriber-level permissions and above, to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
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Analysis
by VulDB Data Team • 04/09/2026
The vulnerability identified as CVE-2023-2500 affects the Go Pricing WordPress plugin, specifically targeting versions up to and including 3.3.19. This represents a critical security flaw that exploits PHP Object Injection through improper input validation within the plugin's shortcode implementation. The vulnerability manifests when the 'go_pricing' shortcode processes the 'data' parameter without adequate sanitization, creating an attack surface that can be exploited by authenticated users possessing subscriber-level permissions or higher. The technical nature of this flaw places it squarely within CWE-502, which categorizes insecure deserialization as a significant threat vector in web applications. The vulnerability's impact is particularly concerning because it enables attackers to manipulate PHP objects during the deserialization process, potentially leading to arbitrary code execution or data compromise.
The operational implications of this vulnerability extend beyond simple privilege escalation, as it provides attackers with the capability to manipulate the plugin's internal object structures. While the specific plugin does not contain a POP (PHP Object Pollution) chain, the absence of such a chain does not mitigate the risk entirely. Instead, it creates a scenario where an attacker can inject malicious PHP objects that may be leveraged in combination with other vulnerable components within the WordPress environment. This means that if additional plugins or themes on the same WordPress installation contain vulnerable POP chains or similar deserialization flaws, the attacker could potentially chain these vulnerabilities together to achieve more severe outcomes including arbitrary file deletion, data exfiltration, or complete system compromise. The vulnerability's exploitation requires only subscriber-level access, making it particularly dangerous as it can be leveraged by users who typically have limited privileges within the system.
Security professionals should recognize this vulnerability as a prime example of how seemingly isolated plugin flaws can create cascading security risks within complex WordPress ecosystems. The attack vector demonstrates the importance of input validation and the dangers of trusting user-supplied data during object deserialization processes. Organizations should implement immediate mitigations including plugin updates to versions that address this vulnerability, along with monitoring for suspicious activity related to the go_pricing shortcode usage. Additionally, the vulnerability aligns with ATT&CK technique T1059.007 for PHP, indicating that attackers may leverage this flaw to execute malicious code through PHP-based attack vectors. The lack of a direct POP chain within the vulnerable plugin does not reduce the severity but rather emphasizes the need for comprehensive security audits of the entire WordPress installation to identify potential chaining opportunities with other vulnerable components.