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

medium Affects web-auth/webauthn-framework, web-auth/webauthn-lib, web-auth/webauthn-symfony-bundle. Feed 2026.10.29.1, updated 2026-10-28; published 2026-03-10; advisory modified 2026-09-10.

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

Package: web-auth/webauthn-framework Composer
Affected versions: >=5.2.0 and <5.2.4
Fixed in: 5.2.4
Severity: medium CVSS 5.4
Exploitation: not on CISA KEV · EPSS 0% (11.1th percentile)
Published: 2026-03-10
Source: osv.dev

References

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

Package: web-auth/webauthn-lib Composer
Affected versions: >=5.2.0 and <5.2.4
Fixed in: 5.2.4
Severity: medium CVSS 5.4
Exploitation: not on CISA KEV · EPSS 0% (11.1th percentile)
Published: 2026-03-10
Source: osv.dev

References

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

Package: web-auth/webauthn-symfony-bundle Composer
Affected versions: >=5.2.0 and <5.2.4
Fixed in: 5.2.4
Severity: medium CVSS 5.4
Exploitation: not on CISA KEV · EPSS 0% (11.1th percentile)
Published: 2026-03-10
Source: osv.dev

References

CWE-346

NVD record web-auth/webauthn-framework advisories web-auth/webauthn-lib advisories web-auth/webauthn-symfony-bundle advisories

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Related advisories

CVE-2021-38299 critical Improper Access Control in Webauthn Framework same package: web-auth/webauthn-framework
CVE-2024-39912 medium The FIDO2/Webauthn Support for PHP library allows enumeration of valid usernames same package: web-auth/webauthn-framework
GHSA-h4fw-6r7f-w494 low Webauthn has a User Verification Downgrade via Default-Open ClientOverridePolicy same package: web-auth/webauthn-framework
GHSA-gq4g-fpc9-vjfq low Webauthn: SimpleFakeCredentialGenerator with an empty secret produces predictable fake cre same package: web-auth/webauthn-lib
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