CVE-2026-119559

MediumCVSS 5.9/10Last modified Nov 5, 2026

Description

OpenLiteSpeed through 1.9.4 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to evade virtual host client certificate requirements over HTTP/3. Because QuicStream inherits a verifyContext() implementation that always returns true, attackers can present a non-mTLS host's SNI with a protected Host header to access protected content.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Oct 30, 2026
Last modified
Nov 5, 2026
NVD status
Deferred

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CVE-2026-119559: Medium severity, CVSS 5.9 | Vulnix