CVE-2026-72780: Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey

Published Aug 11, 2026
·
Updated

Craft CMS before 5.10.5 fails to persist updated credential counters after WebAuthn assertion validation in the passkey login endpoint. Attackers can replay captured login request bodies containing requestOptions and response to create additional authenticated sessions for victim accounts.

Affected Software

1 affected component
Craft CMS Craft CMS<5.10.5

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Craft CMS to a version that resolves this vulnerability.

    Fixed in 5.10.5

Event History

Aug 11, 2026
CVE Published
via MITRE·12:17 PM
Data Sourced
via MITRE·12:17 PM
DescriptionSeverityWeakness
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203