CVE-2026-72780: Craft CMS: Passkey login accepts replayed WebAuthn assertions

critical Affects craftcms/cms. Feed 2026.10.29.2, updated 2026-10-29; published 2026-08-07; advisory modified 2026-08-12.

Craft CMS: Passkey login accepts replayed WebAuthn assertions

Package: craftcms/cms Composer
Affected versions: >=5.0.0-RC1 and <5.10.5
Fixed in: 5.10.5
Severity: critical
Exploitation: not on CISA KEV · EPSS 0% (32.5th percentile)
Published: 2026-08-07
Source: osv.dev

References

CWE-294

NVD record craftcms/cms advisories

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