CVE-2026-104474

OpenLiteSpeed before 1.9.3 Local Privilege Escalation via lsup.sh Auto-Update

Published Oct 2, 2026 CVSS 4.0 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
OpenLiteSpeed before 1.9.3 contains a local privilege escalation vulnerability in admin/misc/lsup.sh that runs unverified update packages from a nobody-writable directory as root. Attackers controlling the nobody web process can replace the package in /usr/local/lsws/autoupdate/ before extraction, so its install.sh runs as root on the next update.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description OpenLiteSpeed before 1.9.3 contains a local privilege escalation vulnerability in admin/misc/lsup.sh that runs unverified update packages from a nobody-writable directory as root. Attackers controlling the nobody web process can replace the package in /usr/local/lsws/autoupdate/ before extraction, so its install.sh runs as root on the next update.
Title OpenLiteSpeed before 1.9.3 Local Privilege Escalation via lsup.sh Auto-Update
First Time appeared Litespeedtech
Litespeedtech openlitespeed
Weaknesses CWE-367
CPEs cpe:2.3:a:litespeedtech:openlitespeed:*:*:*:*:*:*:*:*
Vendors & Products Litespeedtech
Litespeedtech openlitespeed
References
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 5.4, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 5, 2026, 2:50 PM
Reserved
Oct 2, 2026, 12:55 AM
Status
Deferred
Published
Oct 3, 2026, 12:16 AM
Modified
Oct 6, 2026, 4:08 PM