CVE-2026-30964

EUVD-2026-10705
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.4 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
GitHub_MCNA
5.4 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/web-auth/webauthn-framework/commit/535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839
https://github.com/web-auth/webauthn-framework/commit/b4cd9a4394c35fcac6080fd2f84f4f58a30abc01
https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm
https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm