CVE-2025-23676 is a high-severity vulnerability categorized as a Cross-site Scripting (XSS) issue affecting the shawfactor LH Email plugin. This vulnerability allows for improper neutralization of input during web page generation, specifically enabling reflected XSS attacks. Organizations utilizing LH Email versions from n/a through 1.12 are at risk, necessitating immediate attention.
The CVSS score for this vulnerability is 7.1, indicating a high severity level. The attack vector is network-based with a low attack complexity, meaning that attackers can exploit this vulnerability without requiring special privileges. User interaction is required for the attack to succeed, which may limit the immediate threat but still poses a significant risk.
Risk to organizations includes potential unauthorized access to sensitive information and the ability for attackers to manipulate user data. Organizations should prioritize patching immediately to mitigate this risk. The vulnerability has been documented but is currently marked as deferred, indicating that remediation steps may not be fully finalized.
With no public exploit confirmed as of now, organizations are advised to remain vigilant and monitor for any developments regarding this vulnerability. The urgency for defenders remains high, given the potential impact of exploitation.
Vulnerability Details
The official description of CVE-2025-23676 states that it is a Cross-site Scripting vulnerability in the shawfactor LH Email plugin, allowing for reflected XSS. The CVSS score is 7.1, categorized as high severity, indicating that the vulnerability can have serious implications if exploited.
This vulnerability affects LH Email versions from n/a to 1.12. CWE classification for this vulnerability is CWE-79, which corresponds to improper neutralization of input during web page generation.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of user input within the LH Email plugin, leading to potential XSS attacks. The attack vector is network-based, requiring an attacker to send a malicious link to a victim, who must then interact with the link to trigger the vulnerability.
The attack complexity is classified as low, meaning that exploiting this vulnerability does not require advanced skills. Additionally, no privileges are required for an attacker to exploit this vulnerability, significantly increasing the risk to users.
User interaction is required for this attack to succeed, as the victim needs to click on the malicious link. The potential impacts of this vulnerability include low confidentiality impact, low integrity impact, and low availability impact, but the overall risk remains significant.
Risk & Impact Analysis
Real-world deployment risk associated with CVE-2025-23676 is substantial, particularly for organizations using the affected LH Email plugin. Attackers may leverage this vulnerability to execute malicious scripts in a user's web browser, potentially leading to data theft or further compromise of user accounts.
The blast radius potential is moderate, impacting users who interact with the compromised application. Organizations utilizing LH Email should assess the potential for exploitation and implement necessary controls to mitigate risk.
Urgency assessment based on CVSS indicates that organizations should address this vulnerability in their priority patch cycle. The high severity score emphasizes the need for immediate action.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of the LH Email plugin are from n/a to 1.12. Organizations should ensure they are using updated versions to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching their LH Email plugin to the latest version available to address this vulnerability. If immediate patching is not possible, consider implementing web application firewalls (WAF) to filter out malicious requests targeting this vulnerability.
For comprehensive security, organizations may also opt for penetration testing to identify additional vulnerabilities in their applications.
Detection Guidance
Organizations should monitor logs for any unusual user interactions or error messages that may indicate exploitation attempts. Behavioral anomalies, such as unexpected redirects or script executions, should also be investigated.
Additionally, network signatures that detect known patterns of XSS attacks can aid in identifying malicious activity associated with this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-23676 lies in its demonstration of how common plugins can contain severe vulnerabilities that may be overlooked during regular maintenance cycles. This reinforces the need for organizations to implement a robust vulnerability management program that focuses on regular assessments and updates.
This vulnerability highlights the importance of proactive security measures in mitigating risks associated with third-party plugins. Security teams should remain vigilant and adopt a continuous approach to security testing and assessment.
Organizations can benefit from conducting regular web application penetration testing to uncover hidden vulnerabilities across their systems.
Another strategic takeaway from this vulnerability is the necessity for organizations to stay informed about emerging threats and vulnerabilities within the software components they utilize. Engaging with security communities and resources can provide valuable insights into protecting against similar vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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