CVE-2025-24741 is an Open Redirect vulnerability identified in the KB Support plugin developed by LOGON, affecting all versions up to and including 1.6.7. Open Redirect vulnerabilities occur when a web application accepts a user-controlled input that specifies a link to an external site and redirects users to that site without proper validation. In this case, the KB Support plugin fails to properly validate redirect URLs, allowing attackers to craft malicious URLs that redirect users to untrusted or malicious websites. This can be exploited in phishing campaigns where attackers lure users into clicking seemingly legitimate links that redirect to harmful sites, potentially leading to credential theft, malware downloads, or other social engineering attacks. The vulnerability does not require authentication, meaning any user or attacker can exploit it without needing to log in. No user interaction beyond clicking the malicious link is necessary, increasing the risk of exploitation. Although no known exploits have been reported in the wild as of the publication date, the vulnerability is publicly disclosed and thus could be targeted in the future. The KB Support plugin is commonly used in WordPress environments to provide customer support functionalities, including knowledge base and ticketing systems. The lack of a CVSS score means severity must be assessed based on impact and exploitability factors. The vulnerability primarily impacts the confidentiality and integrity of user sessions by enabling redirection to malicious sites, but does not directly affect system availability or allow code execution. The scope is limited to websites using the affected plugin versions. Mitigation requires validating redirect parameters to ensure they only point to trusted internal URLs or implementing allowlists. Users should also be educated to recognize suspicious URLs. Patch information is not yet available, so temporary mitigations are critical.

The primary impact of CVE-2025-24741 is the potential for attackers to conduct phishing and social engineering attacks by redirecting users from legitimate KB Support plugin pages to malicious external sites. This can lead to credential theft, malware infection, or unauthorized data disclosure if users are tricked into entering sensitive information on fraudulent sites. Organizations relying on the KB Support plugin for customer support or knowledge base services may see a loss of user trust and reputational damage if users fall victim to such attacks. While the vulnerability does not directly compromise system integrity or availability, the indirect consequences of successful phishing can be severe, including account compromise and lateral movement within networks. The ease of exploitation—requiring only a crafted URL and no authentication—means attackers can easily weaponize this vulnerability at scale. The absence of known exploits in the wild suggests limited immediate risk, but the public disclosure increases the likelihood of future attacks. Organizations worldwide using the affected plugin versions are at risk, especially those with high volumes of external user interactions through support portals. The impact is thus moderate but could escalate if combined with other vulnerabilities or social engineering tactics.

1. Immediately review and update the KB Support plugin to a version that addresses this vulnerability once a patch is released by the vendor. 2. In the interim, implement strict validation of all redirect parameters within the plugin or via web application firewall (WAF) rules to ensure redirects only point to trusted internal URLs or domains. 3. Employ allowlisting for redirect URLs rather than blacklisting to prevent bypasses. 4. Educate users and support staff to recognize suspicious URLs and avoid clicking on unexpected links, especially those received via email or external communications. 5. Monitor web server logs for unusual redirect patterns or spikes in traffic to external domains originating from the support portal. 6. Consider disabling or restricting the redirect functionality if it is not essential to business operations until a patch is available. 7. Use security headers such as Content Security Policy (CSP) to restrict navigation to trusted domains. 8. Conduct regular security assessments and penetration testing focused on URL handling and redirection logic in web applications. 9. Maintain an incident response plan to quickly address any phishing or social engineering incidents stemming from this vulnerability.