Is there a public exploit for CVE-2026-93903?

Yes. Proof-of-concept code for CVE-2026-93903 has been published publicly.

Is there a proof of concept for CVE-2026-93903?

Yes — 1 proof-of-concept entry is linked on this page, from public repositories and community submissions. They are listed for authorised testing only.

How severe is CVE-2026-93903?

CVE-2026-93903 scores CVSS 9.4 (v4.0), rated critical. EPSS puts the chance of exploitation in the next 30 days at 0.28%.

What does CVE-2026-93903 affect?

CVE-2026-93903 affects litespeedtech LiteSpeed Web Server.

9.4 Critical

LiteSpeed Web Server (LSWS) before 6.3.7 build 1 mishandles internal redirect URL validation in a certain "corner case" of %252e%252e…

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.

Proof-of-concept code is published

Public PoC

Public PoCTautvydas-Aleliunas/CVE-2026-939031 stars

Signals come from Exploit-DB, Metasploit, Nuclei and published proof-of-concept repositories. Their absence means nothing was found, not that nothing exists.

Assessment

CVSS: 9.4 (v4.0)
Severity: Critical
EPSS: 0.28% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Public PoC
Published: 30 September 2026
Last updated: 5 November 2026
Affected: litespeedtech · LiteSpeed Web Server
Assigner: mitre

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

At the source

EUVD (ENISA)

References

Community proofs of concept

No community proof of concept yet. If you have one for a published vulnerability and the right to share it, add it below — it will appear here once reviewed.

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Query this programmatically

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