{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53576 exists.","fix":"No fix has been published for CVE-2026-53576 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-53576 is a critical authentication bypass vulnerability in kestra-io kestra, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-53576 and fix it if it is affected.\n\nWhat it is: CVE-2026-53576 is a critical authentication bypass vulnerability in kestra-io kestra, published on 26 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53576 exists.\n\nAffected product: kestra-io kestra. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-53576/ (Markdown: https://insights.sbomify.com/CVE-2026-53576/index.md)","id":"CVE-2026-53576","markdown":"https://insights.sbomify.com/CVE-2026-53576/index.md","name":"CVE-2026-53576","record":{"aliases":["GHSA-2q47-568g-9h4f"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Kestra orchestration platform","requires_auth":"none","summary":"Unauthenticated attackers can bypass authentication to create and execute malicious flows, achieving root code execution within the container and potentially the host.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"kestra","vendor":"kestra"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-288","name":"Authentication Bypass Using an Alternate Path or Channel"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-08-01","github_poc":3,"max_poc_stars":0,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-08-01T08:25:48Z","kind":"github_poc","ref":"https://github.com/TamatahYT/CVE-2026-53576","stars":0,"title":"Kestra Unauthenticated RCE Exploit (CVE-2026-53576)"},{"date":"2026-09-25T10:21:00Z","kind":"github_poc","ref":"https://github.com/AtlasVector/Kestra-cve-2026-53576","stars":0,"title":"End-to-end reproduction and cross-layer detection of CVE-2026-53576, the unauthenticated RCE in Kestra - taken past the base PoC to show how a common Docker-socket misconfiguration turns container-root into full host compromise."},{"date":"2026-10-27T06:16:20Z","kind":"github_poc","ref":"https://github.com/emitsco768/Vulnerability-lab-cve-2026-53576","stars":0,"title":null},{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-53576.yaml","stars":null,"title":"Kestra \u003c= 1.3.20 - Remote Code Execution"}],"tier":"weaponised"},"has_fix":false,"headline":"Kestra: Unauthenticated RCE via /configs path-suffix auth-filter bypass","id":"CVE-2026-53576","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Kestra: Cross-Execution File Read via Preview Endpoint (IDOR)","id":"CVE-2026-53577"},"packages":[],"prev":{"headline":"EspoCRM: Persistent XSS via CSP nonce injection in applicationName setting by admin user","id":"CVE-2026-53575"},"products":["kestra"],"published":"2026-06-26","related":[{"cvss_score":10,"headline":"Kestra OSS OS Command Injection","id":"CVE-2026-49869","kev_date_added":"2026-09-02","published":"2026-06-26"},{"cvss_score":10,"headline":"Kestra: Remote Code Execution via SQL Injection","id":"CVE-2026-34612","kev_date_added":null,"published":"2026-04-03"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2026-38428","kev_date_added":null,"published":"2026-05-05"},{"cvss_score":8.7,"headline":"Kestra BasicAuth Password Stored as SHA-512 Enables Offline Brute-Force Attack","id":"CVE-2026-55069","kev_date_added":null,"published":"2026-06-26"},{"cvss_score":7.7,"headline":"Kestra: Path traversal via URL-encoded \"%2E%2E\" in execution and namespace file endpoints allows arbitrary file read","id":"CVE-2026-45807","kev_date_added":null,"published":"2026-06-26"},{"cvss_score":7.7,"headline":"Path traversal in kestra","id":"CVE-2026-49984","kev_date_added":null,"published":"2026-06-26"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-29","vendors":["kestra-io"]},"summary":"Unauthenticated attackers can bypass authentication to create and execute malicious flows, achieving root code execution within the container and potentially the host.","url":"https://insights.sbomify.com/CVE-2026-53576/"}