CVE-2026-93903

Published Sep 30, 2026 CVSS 4.0 · 9.4 Critical EPSS < 1% KEV · Not listed
Description
LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case" of %252e%252e double decoding, letting a low-privileged tenant execute code in the context of a different account.

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
Title Internal Redirect Validation Flaw in LiteSpeed Web Server
Type Values Removed Values Added
Description LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case." LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case" of %252e%252e double decoding, letting a low-privileged tenant execute code in the context of a different account.
References
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Internal Redirect Validation Flaw in LiteSpeed Web Server
Type Values Removed Values Added
Description LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case."
First Time appeared Litespeedtech
Litespeedtech litespeed Web Server
Weaknesses CWE-174
CPEs cpe:2.3:a:litespeedtech:litespeed_web_server:*:*:*:*:*:*:*:*
Vendors & Products Litespeedtech
Litespeedtech litespeed Web Server
References
Metrics cvssV4_0

{'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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Nov 5, 2026, 3:15 AM
Reserved
Sep 18, 2026, 8:40 PM
Status
Awaiting Analysis
Published
Sep 30, 2026, 2:17 PM
Modified
Nov 5, 2026, 4:17 AM