Vulnerability Details CVE-2026-30964
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 9.5%
CVSS Severity
CVSS v3 Score 5.4
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
Products affected by CVE-2026-30964
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cpe:2.3:a:spomky-labs:webauthn-lib:*
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cpe:2.3:a:spomky-labs:webauthn-symfony-bundle:*
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cpe:2.3:a:spomky-labs:webauthn_framwork:*