CVE-2026-30964 MEDIUM

CVE-2026-30964: Webauthn Framework: allowed_origins collapses URL-like origins to host-only values, bypassing exact origin validation

Vendor Web-Auth
Product webauthn-framework
Weakness CWE-346 · Origin validation
Published March 10, 2026
Last update March 10, 2026
View on NVD All CVEs

CVSS base score

5.4/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

web-auth/webauthn-lib is an open source set of PHP libraries and a Symfony bundle to allow developers to integrate that authentication mechanism into their web applications. Prior to 5.2.4, when allowed_origins is configured, CheckAllowedOrigins reduces URL-like values to their host component and accepts on host match alone. This makes exact origin policies impossible to express: scheme and port differences are silently ignored. This vulnerability is fixed in 5.2.4.

Key dates

02Disclosure timeline

March 10, 2026 CVE published
March 10, 2026 Record updated