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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| litespeedtech | LiteSpeed Web Server | < 6.3.7 build 1 | 6.3.7 build 1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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Tautvydas-Aleliunas/CVE-2026-93903 ★ 1 · Oct 28, 2026
Security advisory for CVE-2026-93903 affecting LiteSpeed Web Server.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.