CVE-2026-27638
CVE-2026-27638 · ActualBudget missing authorization in sync endpoints allows cross-user budget file access in multi-user mode
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints (`/sync/*`) don't verify that the authenticated user owns or has access to the file being operated on. Any authenticated user can read, modify, and overwrite any other user's budget files by providing their file ID. Version 26.2.1 patches the issue.
CVSS 5.7 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
actual
- Versions
- < 26.2.1: Affected
No fix published
@actual-app/sync-server npm
- Affected ranges
- SEMVER: < 26.2.1
Update to 26.2.1