CVE-2026-30964
March 10, 2026
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.
Affected Packages
https://github.com/web-auth/webauthn-framework.git (GITHUB):
Affected version(s) >=4.1.0 <5.2.4Fix Suggestion:
Update to version 5.2.4web-auth/webauthn-symfony-bundle (PHP):
Affected version(s) >=5.2.0 <5.2.4Fix Suggestion:
Update to version 5.2.4web-auth/webauthn-lib (PHP):
Affected version(s) >=5.2.0 <5.2.4Fix Suggestion:
Update to version 5.2.4web-auth/webauthn-framework (PHP):
Affected version(s) >=5.2.0 <5.2.4Fix Suggestion:
Update to version 5.2.4Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Origin Validation Error
EPSS
Base Score:
0.02
