Missing Authorization Affecting @actual-app/sync-server package, versions <26.4.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published28 Apr 2026
- disclosed23 Apr 2026
- creditRex50527
Introduced: 23 Apr 2026
NewCVE-2026-33318 (opens in a new tab)How to fix?
Upgrade @actual-app/sync-server to version 26.4.0 or higher.
Overview
@actual-app/sync-server is an actual syncing server
Affected versions of this package are vulnerable to Missing Authorization via the change-password endpoint, which lacks proper authorization checks. An attacker can gain administrative privileges by overwriting the password hash for the admin account and then authenticating using the password method, even if the server has migrated to OpenID authentication. This is only exploitable if the server was originally configured with password authentication and later migrated to OpenID, leaving an inactive password row in the authentication table and allowing client-supplied login methods.