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
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 30 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | OpenLiteSpeed through 1.9.4 mTLS Bypass via HTTP/3 SNI and Host Mismatch | |
| First Time appeared |
Litespeedtech
Litespeedtech openlitespeed |
|
| Weaknesses | CWE-295 | |
| CPEs | cpe:2.3:a:litespeedtech:openlitespeed:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Litespeedtech
Litespeedtech openlitespeed |
|
| References |
|
|
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-30T11:31:08.276Z
Reserved: 2026-10-30T10:53:29.316Z
Link: CVE-2026-119559
No data.
Status : Deferred
Published: 2026-10-30T12:16:43.210
Modified: 2026-10-30T19:23:25.493
Link: CVE-2026-119559
No data.
OpenCVE Enrichment
Updated: 2026-10-30T13:30:12Z
Weaknesses