Detect LiteSpeed cPanel Plugin Privilege Escalation (CVE-2026-48172) in IBM QRadar
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
QRadar Detection Query
SELECT
DATEFORMAT(starttime, 'YYYY-MM-dd HH:mm:ss') AS event_time,
sourceip,
username,
QIDNAME(qid) AS event_name,
CATEGORYNAME(category) AS category,
"Process Name",
"Command",
magnitude
FROM events
WHERE
LOGSOURCETYPENAME(devicetype) IN ('Linux OS', 'cPanel', 'Syslog')
AND (
("Process Name" ILIKE '%lshttpd%' OR "Process Name" ILIKE '%lsphp%' OR "Process Name" ILIKE '%lsws_cpanel%' OR "Process Name" ILIKE '%litespeed%')
AND (
"Command" ILIKE '%uid=0%' OR "Command" ILIKE '%euid=0%'
OR "Command" ILIKE '%chmod%' OR "Command" ILIKE '%chown root%'
OR "Command" ILIKE '%usermod%' OR "Command" ILIKE '%visudo%'
OR "Command" ILIKE '%privilege%' OR "Command" ILIKE '%escalat%'
)
)
AND LAST 24 HOURS
ORDER BY starttime DESC
LIMIT 500QRadar AQL query surfacing LiteSpeed cPanel Plugin processes involved in privilege escalation commands or UID-0 transitions across Linux and cPanel log sources.
Data Sources
Required Tables
False Positives & Tuning
- System administrator manually running LiteSpeed management commands as root
- cPanel automated provisioning that invokes LiteSpeed under elevated context
- Patch management systems updating LiteSpeed plugin files with root 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.