CVE-2025-48958: 
PHP vulnerability analysis and mitigation

Froxlor, an open source server administration software, was discovered to contain an HTML Injection vulnerability (CVE-2025-48958) in the customer account portal prior to version 2.2.6. The vulnerability was discovered and disclosed on March 11, 2025, allowing attackers to inject malicious HTML payloads in the email section. The vulnerability affects users of the customer account portal and has been assigned a CVSS v3.1 base score of 5.5 (Medium) (GitHub Advisory, NVD).

The vulnerability exists in the email section of the customer account portal where user input is not properly sanitized. By intercepting requests and modifying the 'domain' field with HTML injection payloads containing anchor tags, attackers can inject malicious content that gets reflected on error pages. The vulnerability has been assigned CWE-79 (Improper Neutralization of Input During Web Page Generation) and requires low privileges with user interaction (Wiz, GitHub Advisory).

The vulnerability can lead to phishing attacks, credential theft, and reputational damage by redirecting users to malicious external websites. Attackers can manipulate portal content, conduct phishing attacks, deface the application, or trick users into clicking malicious links. This affects users of the customer account portal and could result in potential compliance violations for organizations hosting the portal (GitHub Advisory).

The vulnerability has been fixed in Froxlor version 2.2.6. The fix implements proper input validation and output encoding to prevent HTML injection by sanitizing user input and stripping or escaping HTML tags before rendering content on the page (GitHub Advisory, GitHub Commit).