CVE-2024-45394

HIGH 7.8CVE-2024-45394 · Published 03/09/2024 · updated 17/06/2026

In short

CVE-2024-45394 is a HIGH (CVSS 7.8) vulnerability affecting authenticator (authenticator).
Chance of exploitation in the next 30 days (EPSS): 0.09%, higher than 0.35% of all vulnerabilities.
Fix: update to 8.0.0 or later.

Package	Affected versions	Patched versions
authenticator authenticator	`< 8.0.0`	`8.0.0`

Description

Authenticator is a browser extension that generates two-step verification codes. In versions 7.0.0 and below, encryption keys for user data were stored encrypted at-rest using only AES-256 and the EVP_BytesToKey KDF. Therefore, attackers with a copy of a user's data are able to brute-force the user's encryption key. Users on version 8.0.0 and above are automatically migrated away from the weak encoding on first login. Users should destroy encrypted backups made with versions prior to 8.0.0.

References

Authenticator-Extension/Authenticator commit 17aa206 · Patch
Authenticator-Extension/Authenticator security advisory · Vendor Advisory

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