CVE-2026-53576

{"id": "CVE-2026-53576", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53576", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-29T15:02:08.660345Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 10.0, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "kestra-io", "product": "kestra", "versions": [{"status": "affected", "version": "< 1.0.45"}, {"status": "affected", "version": ">= 1.1.0, < 1.3.21"}]}]}], "published": "2026-06-26T22:16:32.840", "references": [{"url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-94"}, {"lang": "en", "value": "CWE-288"}]}], "descriptions": [{"lang": "en", "value": "Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, the authentication filter for the REST API (@Filter(\"/api/v1/**\")) treats any request whose path ends in /configs as the public instance-config endpoint and forwards it without a credential check. kestra addresses its resources by URL path segments that the caller chooses (/api/v1/{tenant}/flows/{namespace}, /api/v1/{tenant}/executions/{namespace}/{id}, /api/v1/{tenant}/namespaces/{namespace}/kv/{key}). An anonymous caller picks the literal configs as the final segment, and the request bypasses Basic-Auth entirely. Because the bypass reaches the flow-create and execution-trigger routes, an unauthenticated caller creates a flow containing a Shell or Process task and runs it. The task executes as root inside the kestra container. The official docker-compose.yml mounts /var/run/docker.sock, so root in the container reaches the host Docker daemon. This vulnerability is fixed in 1.0.45 and 1.3.21."}, {"lang": "es", "value": "Kestra es una plataforma de orquestaci\u00f3n de c\u00f3digo abierto e impulsada por eventos. Antes de las versiones 1.0.45 y 1.3.21, el filtro de autenticaci\u00f3n para la API REST (@Filter(\u201c/api/v1/**\u201d)) trata cualquier solicitud cuya ruta termine en /configs como el punto final p\u00fablico de configuraci\u00f3n de instancia y la reenv\u00eda sin una verificaci\u00f3n de credenciales. Kestra direcciona sus recursos mediante segmentos de ruta de URL que el llamador elige (/api/v1/{tenant}/flows/{namespace}, /api/v1/{tenant}/executions/{namespace}/{id}, /api/v1/{tenant}/namespaces/{namespace}/kv/{key}). Un llamador an\u00f3nimo elige el literal configs como el segmento final, y la solicitud omite completamente la autenticaci\u00f3n Basic-Auth. Debido a que la omisi\u00f3n alcanza las rutas de creaci\u00f3n de flujo y activaci\u00f3n de ejecuci\u00f3n, un llamador no autenticado crea un flujo que contiene una tarea Shell o Process y la ejecuta. La tarea se ejecuta como root dentro del contenedor kestra. El docker-compose.yml oficial monta /var/run/docker.sock, por lo que root en el contenedor alcanza el demonio Docker del host. Esta vulnerabilidad est\u00e1 corregida en las versiones 1.0.45 y 1.3.21."}], "lastModified": "2026-10-25T17:10:00.197", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "ADC0ED79-69EF-4A2A-9F07-4791ED97124F", "versionEndExcluding": "1.0.45"}, {"criteria": "cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "73FD0092-9076-4F1C-9B93-E59C09D30E21", "versionEndExcluding": "1.3.21", "versionStartIncluding": "1.1.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}