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
References
History
Fri, 06 Nov 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
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
|
Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-30T11:31:08.276Z
Updated: 2026-11-05T21:45:08.355Z
Reserved: 2026-10-30T10:53:29.316Z
Link: CVE-2026-119559
Updated: 2026-11-05T21:44:53.435Z
Status : Deferred
Published: 2026-10-30T12:16:43.210
Modified: 2026-11-05T22:17:50.443
Link: CVE-2026-119559
No data.