{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31882","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-09T21:59:02.686Z","datePublished":"2026-03-13T19:28:25.615Z","dateUpdated":"2026-03-13T19:43:56.406Z"},"containers":{"cna":{"title":"Dagu SSE Authentication Bypass in Basic Auth Mode","problemTypes":[{"descriptions":[{"cweId":"CWE-306","lang":"en","description":"CWE-306: Missing Authentication for Critical Function","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/dagu-org/dagu/security/advisories/GHSA-9wmw-9wph-2vwp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/dagu-org/dagu/security/advisories/GHSA-9wmw-9wph-2vwp"},{"name":"https://github.com/dagu-org/dagu/pull/1752","tags":["x_refsource_MISC"],"url":"https://github.com/dagu-org/dagu/pull/1752"},{"name":"https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1c7c357308f77f3f24d775","tags":["x_refsource_MISC"],"url":"https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1c7c357308f77f3f24d775"},{"name":"https://github.com/dagu-org/dagu/releases/tag/v2.2.4","tags":["x_refsource_MISC"],"url":"https://github.com/dagu-org/dagu/releases/tag/v2.2.4"}],"affected":[{"vendor":"dagu-org","product":"dagu","versions":[{"version":"< 2.2.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-03-13T19:28:25.615Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-9wmw-9wph-2vwp","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-13T19:43:49.630099Z","id":"CVE-2026-31882","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-13T19:43:56.406Z"}}]}}