Vulnerability Intelligence Report
CVE-2026-93903
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.
No Active Exploit Signals
CVSS Base Score
9.4
CRITICAL
EPSS Probability:0.28%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-174 ↗CWE-174 Double Decoding of the Same Data
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| litespeedtech | LiteSpeed Web Server | 0 < 6.3.7 build 1 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.283%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2026-09-18T20:40:05 |
| Published | 2026-09-30T13:44:11 |
| Last Updated | 2026-11-05T03:15:00 |
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