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CVE-2024-39912: The FIDO2/Webauthn Support for PHP library allows enumeration of valid usernames

medium Affects web-auth/webauthn-framework, web-auth/webauthn-lib. Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

The FIDO2/Webauthn Support for PHP library allows enumeration of valid usernames

Package
web-auth/webauthn-framework Composer
Affected versions
>=4.5.0 and <4.9.0
Fixed in
4.9.0
Severity
medium  CVSS 5.3
Exploitation
not on CISA KEV · EPSS 0% (33.1th percentile)
Published
2024-07-15
Source
osv.dev

References

The FIDO2/Webauthn Support for PHP library allows enumeration of valid usernames

Package
web-auth/webauthn-lib Composer
Affected versions
>=4.5.0 and <4.9.0
Fixed in
4.9.0
Severity
medium  CVSS 5.3
Exploitation
not on CISA KEV · EPSS 0% (33.1th percentile)
Published
2024-07-15
Source
osv.dev

References

CWE-204
NVD recordweb-auth/webauthn-framework advisoriesweb-auth/webauthn-lib advisories

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