Detections
Analytics
CVE-2026-93903
critical
Description
LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case."
References
https://www.litespeedtech.com/products/litespeed-web-server/release-log
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-89955
https://docs.litespeedtech.com/lsws/changelog/#v6-3-7-build-1
Details
Published: 2026-09-30
Updated: 2026-09-30
Risk Information
CVSS v2
Base Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Severity: Medium
CVSS v3
Base Score: 6.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Severity: Medium
CVSS v4
Base Score: 9.4
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Severity: Critical
EPSS
EPSS: 0.00397