7.5

CVE-2026-31882

Exploit

Dagu SSE Authentication Bypass in Basic Auth Mode

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Dagu ≫ Dagu Version < 2.2.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.78% 0.51
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-306 Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

https://github.com/dagu-org/dagu/security/advisories/GHSA-9wmw-9wph-2vwp
Vendor Advisory
Exploit
Mitigation
https://github.com/dagu-org/dagu/pull/1752
Patch
Issue Tracking
https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1c7c357308f77f3f24d775
Patch
https://github.com/dagu-org/dagu/releases/tag/v2.2.4
Product
Release Notes