Security Advisory

CVE-2026-42604

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-12 18:42:38

Last updated 2026-06-15 13:10:30

Assigner GitHub_M

CVSS score 6.9

State PUBLISHED

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.

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