جزئیات آسیب‌پذیری

Dagu is a workflow engine with a built-in Web user interface. Prior to 2.2.4, when Dagu is configured with HTTP Basic authentication (DAGU_AUTH_MODE=basic), all Server-Sent Events (SSE) endpoints are accessible without any credentials. This allows unauthenticated attackers to access real-time DAG execution data, workflow configurations, execution logs, and queue status — bypassing the authentication that protects the REST API. The buildStreamAuthOptions() function builds authentication options for SSE/streaming endpoints. When the auth mode is basic, it returns an auth.Options struct with BasicAuthEnabled: true but AuthRequired defaults to false (Go zero value). The authentication middleware at internal/service/frontend/auth/middleware.go allows unauthenticated requests when AuthRequired is false. This vulnerability is fixed in 2.2.4.

• https://github.com/dagu-org/dagu/security/advisories/GHSA-9wmw-9wph-2vwp x_refsource_CONFIRM
• https://github.com/dagu-org/dagu/pull/1752 x_refsource_MISC
• https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1c7c357308f77f3f24d775 x_refsource_MISC
• https://github.com/dagu-org/dagu/releases/tag/v2.2.4 x_refsource_MISC