Findings

CVE-2026-27638

Actual is a local-first personal finance tool.

Published Feb 26, 2026 · updated Jun 17, 2026 · actualbudget actual

Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints ( ) 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.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 26, 2026 · NIST NVD

    Detected

    Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints ( ) 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.

  2. Jun 17, 2026 · NIST NVD

    Updated

    Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints ( ) 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.

Affected

  • cpe actualbudget/actualversion unspecified

Sources

  • NIST NVDVulnerability recordCVE-2026-27638

    Actual is a local-first personal finance tool. Prior to version 26.2.1, in multi-user mode (OpenID), the sync API endpoints ( ) don't verify that the authenticated user owns or has access to the file being operated on. Any authenticated user can read, modify, and overwrit

    nvd.nist.gov

References