{"api_version":"1","generated_at":"2026-06-27T09:37:51+00:00","cve":"CVE-2026-53576","urls":{"html":"https://cve.report/CVE-2026-53576","api":"https://cve.report/api/cve/CVE-2026-53576.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53576","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53576"},"summary":{"title":"Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass","description":"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.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-06-26 22:16:32","updated_at":"2026-06-26 22:16:32"},"problem_types":["CWE-94","CWE-288","CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection')","CWE-288 CWE-288: Authentication Bypass Using an Alternate Path or Channel"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"10","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":10,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"10","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f","name":"https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f","refsource":"security-advisories@github.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53576","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53576","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"kestra-io","product":"kestra","version":"affected < 1.0.45","platforms":[]},{"source":"CNA","vendor":"kestra-io","product":"kestra","version":"affected >= 1.1.0, < 1.3.21","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"kestra","vendor":"kestra-io","versions":[{"status":"affected","version":"< 1.0.45"},{"status":"affected","version":">= 1.1.0, < 1.3.21"}]}],"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."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-288","description":"CWE-288: Authentication Bypass Using an Alternate Path or Channel","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-26T20:54:08.282Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/kestra-io/kestra/security/advisories/GHSA-2q47-568g-9h4f"}],"source":{"advisory":"GHSA-2q47-568g-9h4f","discovery":"UNKNOWN"},"title":"Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-53576","datePublished":"2026-06-26T20:54:08.282Z","dateReserved":"2026-06-09T19:11:53.484Z","dateUpdated":"2026-06-26T20:54:08.282Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-26 22:16:32","lastModifiedDate":"2026-06-26 22:16:32","problem_types":["CWE-94","CWE-288","CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection')","CWE-288 CWE-288: Authentication Bypass Using an Alternate Path or Channel"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","baseScore":10,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53576","Ordinal":"1","Title":"Kestra: Unauthenticated RCE via /configs path-suffix auth-filter","CVE":"CVE-2026-53576","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53576","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"Kestra: Unauthenticated RCE via /configs path-suffix auth-filter"}]}}}