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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-42604

Actual has an OpenID `client_secret` Disclosure via Broken Authorization Guard in `/openid/config`

Description

Actual is a local-first personal finance tool. The `POST /openid/config` endpoint in Actual Budget's sync-server versions <= 26.4.0 exposes the full OpenID Connect configuration—including the OAuth2 `client_secret`—to any caller who knows the bootstrap password. The endpoint also lacks authentication and rate limiting, making the bootstrap password brute-forceable. Version 26.5.0 fixes the issue.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

actualbudget actual

  • < 26.5.0affected

References