CVE-2026-42604

published 2026-06-12

CVE-2026-42604: 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…

Priority P3 44 medium 6.9 CVSS 4.0

AV N AC L AT P PR N UI N VC H VI H VA N SC N SI N SA N E U CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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

1 ranges

Vendor	Product	Version range	Fixed in
actualbudget	actual	< 26.5.0	26.5.0

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CWE-863