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CVE-2026-42604

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

CVSS 6.9 MEDIUMEPSS 0.4%CWE-863
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.
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
Productos afectados
actualbudget · actual

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