{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/71349?format=json","vulnerability_id":"VCID-t6xt-j1ap-q7fk","summary":"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.","aliases":[{"alias":"CVE-2026-31882"},{"alias":"GHSA-9wmw-9wph-2vwp"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/374639?format=json","purl":"pkg:npm/dagu@2.2.4","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:npm/dagu@2.2.4"}],"affected_packages":[],"references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2026-31882","reference_id":"","reference_type":"","scores":[{"value":"0.0017","scoring_system":"epss","scoring_elements":"0.38038","published_at":"2026-06-11T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-31882"},{"reference_url":"https://github.com/dagu-org/dagu","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/dagu-org/dagu"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31882","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31882"},{"reference_url":"https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1c7c357308f77f3f24d775","reference_id":"064616c9b80c04824c1c7c357308f77f3f24d775","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T19:43:49Z/"}],"url":"https://github.com/dagu-org/dagu/commit/064616c9b80c04824c1c7c357308f77f3f24d775"},{"reference_url":"https://github.com/dagu-org/dagu/pull/1752","reference_id":"1752","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T19:43:49Z/"}],"url":"https://github.com/dagu-org/dagu/pull/1752"},{"reference_url":"https://github.com/dagu-org/dagu/security/advisories/GHSA-9wmw-9wph-2vwp","reference_id":"GHSA-9wmw-9wph-2vwp","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T19:43:49Z/"}],"url":"https://github.com/dagu-org/dagu/security/advisories/GHSA-9wmw-9wph-2vwp"},{"reference_url":"https://github.com/dagu-org/dagu/releases/tag/v2.2.4","reference_id":"v2.2.4","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""},{"value":"Track","scoring_system":"ssvc","scoring_elements":"SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-03-13T19:43:49Z/"}],"url":"https://github.com/dagu-org/dagu/releases/tag/v2.2.4"}],"weaknesses":[{"cwe_id":306,"name":"Missing Authentication for Critical Function","description":"The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources."}],"exploits":[],"severity_range_score":"7.0 - 8.9","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-t6xt-j1ap-q7fk"}