Detect LiteSpeed cPanel Plugin Privilege Escalation (CVE-2026-48172) in Sumo Logic CSE
Detects exploitation of CVE-2026-48172, a privilege escalation vulnerability in the LiteSpeed cPanel Plugin (CWE-266: Incorrect Privilege Assignment). Attackers with low-privileged cPanel access can leverage the plugin's improper privilege handling to elevate to root or administrative system access. This vulnerability is actively exploited in the wild (CISA KEV).
MITRE ATT&CK
Sumo Detection Query
_sourceCategory=linux/syslog OR _sourceCategory=cpanel/access OR _sourceCategory=linux/audit
| where _raw matches /lshttpd|lsphp|lsws_cpanel|litespeed/
| where _raw matches /uid=0|euid=0|privilege|escalat|chmod.*\+s|chown.*root|usermod|visudo/
| parse regex "(?P<process>lshttpd|lsphp|lsws_cpanel|litespeed)" nodrop
| parse regex "(?P<uid_info>uid=\d+|euid=\d+)" nodrop
| parse regex "(?P<cmd>chmod|chown|usermod|visudo|sudo|su|passwd)" nodrop
| timeslice 5m
| count by _timeslice, _sourceHost, process, uid_info, cmd
| where _count > 0
| sort by _timeslice descSumo Logic query for LiteSpeed cPanel Plugin privilege escalation across Linux syslog and cPanel logs. Parses process name, UID transitions, and privilege commands in a 5-minute time bucket.
Data Sources
Required Tables
False Positives & Tuning
- Routine LiteSpeed administrative operations by hosting provider staff
- Automated backup scripts that invoke LiteSpeed APIs with temporary elevated rights
- cPanel license validation routines that run with elevated permissions
Other platforms for CVE-2026-48172
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Simulate LiteSpeed Plugin Privilege Escalation via SUID Binary Invocation
Expected signal: Process creation event for /tmp/lsphp with SUID bit set; child process reporting uid=0 or euid=0 in execve audit record.
- Test 2LiteSpeed Parent Process Spawning usermod Command
Expected signal: SecurityEvent/audit log showing useradd/usermod syscall with uid=0, parent process traceable to a litespeed-named process or shell.
- Test 3Unauthorized sudoers Entry via LiteSpeed Process Context
Expected signal: File write to /etc/sudoers.d/ captured in Linux audit log (auditd WRITE syscall on path /etc/sudoers.d/litespeed_test) with triggering process running as UID 0.
Unlock Pro Content
Get the full detection package for CVE-2026-48172 including response playbook, investigation guide, and atomic red team tests.