CVE-2026-53576
- Source
- https://cve.org/CVERecord?id=CVE-2026-53576
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53576.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-53576
- Aliases
-
- GHSA-2q47-568g-9h4f
- Published
- 2026-06-26T20:54:08.282Z
- Modified
- 2026-07-15T01:48:51.910150125Z
- Severity
-
- 10.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass
- Details
-
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.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-288", "CWE-94" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53576.json" }- References
Affected packages
Git / github.com/kestra-io/kestra
Affected ranges
- Type
- GIT
- Repo
- https://github.com/kestra-io/kestra
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixed
- Database specific
{ "source": "CPE_RANGE", "cpe": "cpe:2.3:a:kestra:kestra:*:*:*:*:*:*:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "1.0.45" }, { "introduced": "1.1.0" }, { "fixed": "1.3.21" } ] }