by Kastro
Paper/Archive/CVE-2026-93903

CVE-2026-93903

litespeedtech LiteSpeed Web Server — LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case."

EPSS 0.3%CVSS 9.4
critical.is priorityof 100
32
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 17.3.173 × 203.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case."

Affected

ProductAffectedFixed inSource
LiteSpeed Web Server< 6.3.7 build 16.3.7 build 1CNA

Scores by source

mitre (CNA)9.4CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

reflitespeedtech.com/products/litespeed-web-server/release-logrefdocs.litespeedtech.com/lsws/changelog/#v6-3-7-build-1refgithub.com/Tautvydas-Aleliunas/CVE-2026-93903