LiteSpeed User-End cPanel Plugin Privilege Escalation Vulnerability (CVE-2026-48172) Security Advisory

1. Apply Security Update

Upgrade the LiteSpeed cPanel plugin immediately. The recommended minimum secure version is 2.4.7.

2. Incident Response & Detection (IoC Verification)

Run the following command in your Bash terminal to check for signs of active exploitation:

grep -rE "cpanel_jsonapi_func=redisAble" /var/cpanel/logs /usr/local/cpanel/logs/ 2>/dev/null

• No Output: Your system has likely not been targeted by this specific exploit.
• Output Detected: Examine the identified IP addresses. If they are unauthorized or malicious, block them immediately at the firewall level and conduct a thorough forensic analysis of the system logs to determine the extent of the compromise.

This vulnerability (CVE-2026-48172) is a critical privilege escalation flaw in the LiteSpeed User-End cPanel Plugin. The root cause lies in the improper handling of the Redis enable/disable features (redisAble), which falls under Incorrect Privilege Assignment (CWE-266).

An attacker can exploit this flaw to escalate privileges from a standard user to root. With a CVSS score of 9.8 (Critical), this vulnerability requires no privileges or user interaction and can be exploited remotely over the network. Active exploitation was detected in the wild in May 2026, leading to its inclusion in the CISA Known Exploited Vulnerabilities (KEV) catalog.