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Vulnerabilities

Vulnerability · 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.

Published Mar 10, 2026 · catalog updated Jun 17, 2026 · web-auth/webauthn-lib is an open

Check if you run it

No confirmed exploitation is on record for CVE-2026-30964. EPSS is 0.20%. Act only if a listed version of web-auth/webauthn-lib is an open is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (web-auth/webauthn-lib is an open).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Advisory link
Affected products
cpe spomky-labs/webauthn framwork · cpe spomky-labs/webauthn-lib · cpe spomky-labs/webauthn-symfony-bundle

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe spomky-labs/webauthn framworkversion unspecified
  • cpe spomky-labs/webauthn-libversion unspecified
  • cpe spomky-labs/webauthn-symfony-bundleversion unspecified

How to fix CVE-2026-30964

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-30964. EPSS is 0.20%. Act only if a listed version of web-auth/webauthn-lib is an open is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-346. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 10, 2026 · NIST NVD

    Detected

    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 d

  2. Jun 17, 2026 · NIST NVD

    Updated

    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 d

Sources

  • CVE.orgVulnerability recordCVE-2026-30964

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-30964

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-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 h

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.