CVE-2026-31882

Published: Mar 13, 2026 Last Modified: Mar 16, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0019
Percentile
0,4th
Updated

EPSS Score Trend (Last 3 Days)

306

Missing Authentication for Critical Function

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Other
Potential Impacts:
Gain Privileges Or Assume Identity Varies By Context
Applicable Platforms
Technologies: Cloud Computing, ICS/OT
Likelihood of Exploit: High
View CWE Details
https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1…
https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1c7c357308f77f3f24d775
https://github.com/dagu-org/dagu/pull/1752
https://github.com/dagu-org/dagu/pull/1752
https://github.com/dagu-org/dagu/releases/tag/v2.2.4
https://github.com/dagu-org/dagu/releases/tag/v2.2.4
https://github.com/dagu-org/dagu/security/advisories/GHSA-9…
https://github.com/dagu-org/dagu/security/advisories/GHSA-9wmw-9wph-2vwp