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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/web-auth/webauthn-framework/commit/535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839	Patch
https://github.com/web-auth/webauthn-framework/commit/b4cd9a4394c35fcac6080fd2f84f4f58a30abc01	Patch
https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm	Exploit Vendor Advisory
https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:spomky-labs:webauthn-lib::::::::
	cpe:2.3:a:spomky-labs:webauthn-symfony-bundle::::::::
	cpe:2.3:a:spomky-labs:webauthn_framwork::::::::

History

No history.

Information

Published : 2026-03-10 18:18

Updated : 2026-06-17 10:33

NVD link : CVE-2026-30964

Mitre link : CVE-2026-30964

CVE.ORG link : CVE-2026-30964

JSON object : View

Products Affected

spomky-labs

webauthn-symfony-bundle
webauthn-lib
webauthn_framwork

CWE

CWE-346

Origin Validation Error

{"id": "CVE-2026-30964", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30964", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-10T17:57:30.314634Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "web-auth", "product": "webauthn-framework", "versions": [{"status": "affected", "version": "< 5.2.4"}]}, {"vendor": "web-auth", "product": "webauthn-lib", "versions": [{"status": "affected", "version": "< 5.2.4"}]}, {"vendor": "web-auth", "product": "webauthn-symfony-bundle", "versions": [{"status": "affected", "version": "< 5.2.4"}]}]}], "published": "2026-03-10T18:18:55.410", "references": [{"url": "https://github.com/web-auth/webauthn-framework/commit/535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/web-auth/webauthn-framework/commit/b4cd9a4394c35fcac6080fd2f84f4f58a30abc01", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggm", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-346"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "web-auth/webauthn-lib es un conjunto de c\u00f3digo abierto de bibliotecas PHP y un paquete de Symfony para permitir a los desarrolladores integrar ese mecanismo de autenticaci\u00f3n en sus aplicaciones web. Antes de la versi\u00f3n 5.2.4, cuando se configura allowed_origins, CheckAllowedOrigins reduce los valores similares a URL a su componente de host y acepta solo la coincidencia de host. Esto hace que las pol\u00edticas de origen exactas sean imposibles de expresar: las diferencias de esquema y puerto se ignoran silenciosamente. Esta vulnerabilidad se corrige en la versi\u00f3n 5.2.4."}], "lastModified": "2026-06-17T10:33:14.180", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:spomky-labs:webauthn-lib:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B3FDA39-7E8E-4393-B618-705FC6E261B5", "versionEndExcluding": "5.2.4", "versionStartIncluding": "5.2.0"}, {"criteria": "cpe:2.3:a:spomky-labs:webauthn-symfony-bundle:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2C68F3BB-963D-4216-95DD-7EB4CFF2FAA2", "versionEndExcluding": "5.2.4", "versionStartIncluding": "5.2.0"}, {"criteria": "cpe:2.3:a:spomky-labs:webauthn_framwork:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B2D412A1-79BE-433D-9700-ED728B93761C", "versionEndExcluding": "5.2.4", "versionStartIncluding": "5.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}