Medium 5.4Published Mar 10, 2026

CVE-2026-30964web-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.

Updated under an hour ago (2026-10-19 08:00 UTC)

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It affects spomky-labs webauthn-lib and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for spomky-labs webauthn-lib

Exploited in the last 30 days

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: 5.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-346
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Analyzed
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

spomky-labs webauthn-lib spomky-labs:webauthn-lib	from 5.2.0 before 5.2.4	NVD
spomky-labs webauthn-symfony-bundle spomky-labs:webauthn-symfony-bundle	from 5.2.0 before 5.2.4	NVD
spomky-labs webauthn_framwork spomky-labs:webauthn_framwork	from 5.2.0 before 5.2.4	NVD

References

https://github.com/web-auth/webauthn-framework/commit/535cc3c2dcbd9c3dfd5e00a254ad4a984e5e7839patch
https://github.com/web-auth/webauthn-framework/commit/b4cd9a4394c35fcac6080fd2f84f4f58a30abc01patch
https://github.com/web-auth/webauthn-framework/security/advisories/GHSA-f7pm-6hr8-7ggmexploit, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.