Litespeedtech: Security Vulnerabilities
CVE-2026-54420
LiteSpeed cPanel plugin before 2.4.8 (as distributed in LiteSpeed WHM PlugIn before 5.3.2.0) mishandles symlinks provided by a user with FTP or web shell access on a shared hosting server running CloudLinux/CageFS, as exploited in the wild in May 2026.
Known exploited
CVSS Score
8.5
EPSS Score
0.013
Published
2026-06-14
CVE-2026-48172
LiteSpeed User-End cPanel Plugin before 2.4.5 allows privilege escalation (possibly to root), as exploited in the wild in May 2026. Detection is best done via a command line of grep -rE "cpanel_jsonapi_func=redisAble" /var/cpanel/logs /usr/local/cpanel/logs/ 2>/dev/null in Bash. If you get no output, you have not been hit with exploitation of the vulnerability. If there is output, we recommend you examine the IP addresses in the list, determine if they are valid IP addresses, and if not, block them. To determine damage done, examine the system logs for use by the detected IP addresses. The issue is related to mishandling of Redis enable/disable features. The recommended minimum version is 2.4.7.
Known exploited
CVSS Score
10.0
EPSS Score
0.189
Published
2026-05-21
OpenLiteSpeed and LSWS Enterprise provided by LiteSpeed Technologies contain an OS command injection vulnerability. An arbitrary OS command may be executed by an attacker with the administrative privilege.
CVSS Score
8.6
EPSS Score
0.015
Published
2026-03-16
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.
CVSS Score
5.3
EPSS Score
0.008
Published
2025-08-01
Incorrect Privilege Assignment vulnerability in LiteSpeed Technologies LiteSpeed Cache litespeed-cache allows Privilege Escalation.This issue affects LiteSpeed Cache: from n/a through <= 6.5.1.
CVSS Score
8.1
EPSS Score
0.009
Published
2024-10-29
Insufficiently Protected Credentials vulnerability in LiteSpeed Technologies LiteSpeed Cache litespeed-cache allows Authentication Bypass.This issue affects LiteSpeed Cache: from n/a through < 6.5.0.1.
CVSS Score
9.8
EPSS Score
0.832
Published
2024-10-20
Relative Path Traversal vulnerability in LiteSpeed Technologies LiteSpeed Cache litespeed-cache allows Path Traversal.This issue affects LiteSpeed Cache: from n/a through <= 6.4.1.
CVSS Score
8.8
EPSS Score
0.006
Published
2024-10-16
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LiteSpeed Technologies LiteSpeed Cache litespeed-cache allows Stored XSS.This issue affects LiteSpeed Cache: from n/a through <= 6.5.0.2.
CVSS Score
6.5
EPSS Score
0.002
Published
2024-10-05
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LiteSpeed Technologies LiteSpeed Cache litespeed-cache allows Stored XSS.This issue affects LiteSpeed Cache: from n/a through <= 6.5.0.2.
CVSS Score
7.1
EPSS Score
0.014
Published
2024-10-05
The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via plugin debug settings in all versions up to, and including, 6.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
CVSS Score
5.5
EPSS Score
0.003
Published
2024-09-25
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