CVE-2025-23652 is classified as a high-severity vulnerability with a CVSS score of 7.1. This vulnerability allows for improper neutralization of input during web page generation, specifically leading to reflected Cross-site Scripting (XSS) in the Add Custom Content After Post plugin for WordPress. It affects versions up to and including 1.0, posing a significant risk to organizations leveraging this plugin.
Risk to organizations includes potential unauthorized access to sensitive user data and the compromise of user sessions. Attackers may leverage this vulnerability to execute arbitrary scripts in the context of a victim's browsing session. Given the attack vector is network-based and requires user interaction, the potential for exploitation is heightened, especially in environments where users are prompted to click on untrusted links.
Organizations should prioritize patching immediately to prevent exploitation, as the implications of an attack could be severe, impacting user trust and data integrity. The vulnerability was published on February 14, 2025, and continues to pose a risk until remediated.
The vulnerability has not been confirmed to have a public exploit available, and it is not currently listed in the Known Exploited Vulnerabilities (KEV) catalog. However, the potential impact and the nature of the vulnerability necessitate immediate action from affected organizations.
The urgency for defenders cannot be overstated, as the ramifications of neglecting this vulnerability could lead to significant security incidents.
Vulnerability Details
The official CVE description states that this vulnerability allows for improper neutralization of input during web page generation. Specifically, it affects the Add Custom Content After Post plugin, allowing for reflected XSS. The CVSS score of 7.1 indicates a high severity, highlighting the need for immediate attention.
The attack vector is classified as network-based, with low attack complexity and no privileges required to exploit it. However, user interaction is necessary, meaning that an attacker must somehow convince a user to execute the malicious script.
The vulnerability is categorized under CWE-79, which denotes improper neutralization of input during web page generation. Organizations using this plugin should be aware of the potential impacts on confidentiality, integrity, and availability, all classified as low.
Technical Analysis
The root cause of CVE-2025-23652 stems from insufficient input validation. The Add Custom Content After Post plugin fails to properly sanitize user input before rendering it on the webpage, allowing attackers to inject malicious scripts that execute in the context of an authenticated user's session.
Attackers can exploit this vulnerability through network access, where they can craft a malicious link containing the exploit. Because the attack complexity is low, it means that even less sophisticated attackers could potentially leverage this vulnerability if they can convince users to click on the crafted link.
No privileges are required to exploit this vulnerability, thus making it accessible to any attacker who can interact with the web application. User interaction is needed, which could be facilitated through phishing or social engineering tactics.
The confidentiality, integrity, and availability impacts are all assessed as low, indicating that while the potential for exploitation exists, the immediate threat to these aspects of the system may not be catastrophic without further vulnerabilities being exploited in conjunction.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is considerable, particularly for organizations that rely on the Add Custom Content After Post plugin in their WordPress installations. The ability for an attacker to execute scripts in the context of an authenticated user's session can lead to significant data breaches, unauthorized access, and reputational damage.
The urgency assessment based on the CVSS score indicates that organizations should address this vulnerability in their priority patch cycle. Given that the vulnerability is classified as high severity, it necessitates immediate attention and remediation efforts.
The blast radius potential is significant, especially if this vulnerability can be exploited in environments where user authentication and session management are not adequately enforced. Organizations must consider the risk of cascading failures resulting from successful exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects the Add Custom Content After Post plugin for WordPress versions from n/a to 1.0. Organizations using this plugin should upgrade to the latest version to mitigate risks associated with CVE-2025-23652.
Mitigation & Remediation
Organizations should ensure immediate patching of the Add Custom Content After Post plugin to the latest version available. If a patch is unavailable, implement workarounds by sanitizing user inputs and employing web application firewalls to filter out malicious requests.
For comprehensive security, organizations should consider engaging in penetration testing to validate the effectiveness of implemented remediation measures.
Configuration hardening should be performed to minimize attack surfaces, alongside continuous monitoring for any anomalies that may indicate attempts to exploit this vulnerability.
Detection Guidance
Organizations should monitor for unusual logs, especially those indicating attempts to inject scripts into web pages. Behavioral anomalies, such as unexpected redirects or session hijacking attempts, should also be investigated promptly.
Network signatures that indicate exploitation attempts could be useful in proactive detection. Regular audits of the web application and user interaction patterns can help in identifying potential exploitation vectors.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-23652 highlights the ongoing need for robust input validation and sanitization practices in web applications. As web technologies evolve, vulnerabilities like reflected XSS continue to pose threats to organizations, emphasizing the importance of proactive security measures.
This vulnerability represents a pattern where insufficient input validation leads to significant security risks, and organizations must remain vigilant in their security practices to mitigate such vulnerabilities.
Lessons for security teams include the necessity of conducting regular security assessments and implementing effective security testing methodologies. Engaging in penetration testing methodologies can help surface similar weaknesses in their applications.
Finally, the strategic defensive takeaway is clear: organizations must prioritize web application security and ensure that all user inputs are adequately validated and sanitized to prevent exploitation of vulnerabilities like CVE-2025-23652.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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