An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

Related CVEs

CVE-2022-31742

Key Information

GHSA ID

GHSA-5frx-2qvr-6r92

Published

December 22, 2022 9:30 PM

Last Modified

April 15, 2025 9:31 PM

CVSS Score

5.0 /10

Primary Ecosystem

Unknown

Primary Package

Unknown

GitHub Reviewed

✗ No

Dataset

Last updated: September 9, 2025 6:37 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.