VULNERABILITY INTELLIGENCE

CVE-2026-42604

EPSS probability0.40%
CISA KEVNot currently listed
Published2026-06-12
Last modified2026-10-26

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.

Weakness classification

  • security-advisories@github.com: CWE-863

Primary references