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CVE-2026-42604

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

Description (CNA)

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 (CNA)

Vendor / productVersions
actualbudget / actualaffected < 26.5.0

CWE

CWE-863

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.