{"id":"CVE-2026-67179","aliases":["EUVD-2026-56240","GHSA-vj3w-h7v3-5rpr"],"status":"published","title":"Genkit improper host header validation","description":"Genkit does not properly validate host request headers. Any host on the developer's network, and any website the developer visits (via DNS rebinding), can reach POST /api/runAction on the Dev UI server (default port 4000) and execute any registered Genkit action and read the result. Fixed on 2026-06-18.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00213,"percentile":0.11692,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-644"],"published":"2026-08-11T15:56:09Z","modified":"2026-10-24T16:10:00Z","products":[{"vendor":"genkit-ai","product":"genkit"}],"references":[{"url":"https://github.com/genkit-ai/genkit/issues/5581","tags":["issue-tracking"]},{"url":"https://github.com/genkit-ai/genkit/pull/5587","tags":["patch"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-67179","tags":["vdb-entry"]},{"url":"https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-223-01.json","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67179"},{"url":"https://github.com/advisories/GHSA-vj3w-h7v3-5rpr"}],"sources":{"cve":[{"id":"CVE-2026-67179","title":"Genkit improper host header validation","description":"Genkit does not properly validate host request headers. Any host on the developer's network, and any website the developer visits (via DNS rebinding), can reach POST /api/runAction on the Dev UI server (default port 4000) and execute any registered Genkit action and read the result. Fixed on 2026-06-18.","status":"published","published":"2026-08-11T15:56:09.323Z","modified":"2026-08-17T18:18:07.515Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-644"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-56240","description":"Genkit does not properly validate host request headers. Any host on the developer's network, and any website the developer visits (via DNS rebinding), can reach POST /api/runAction on the Dev UI server (default port 4000) and execute any registered Genkit action and read the result. Fixed on 2026-06-18.","status":"published","published":"2026-08-11T15:56:09Z","modified":"2026-08-17T18:18:07Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:01:48.395378Z"}],"ghsa":[{"id":"GHSA-vj3w-h7v3-5rpr","title":"Genkit does not properly validate host request headers. Any host on the developer's network, and...","description":"Genkit does not properly validate host request headers. Any host on the developer's network, and any website the developer visits (via DNS rebinding), can reach POST /api/runAction on the Dev UI server (default port 4000) and execute any registered Genkit action and read the result. Fixed on 2026-06-18.","status":"published","published":"2026-08-11T18:30:48Z","modified":"2026-08-11T18:30:53Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-644"],"updated_at":"2026-11-02T15:10:18.151039Z"}],"nvd":[{"id":"CVE-2026-67179","description":"Genkit does not properly validate host request headers. Any host on the developer's network, and any website the developer visits (via DNS rebinding), can reach POST /api/runAction on the Dev UI server (default port 4000) and execute any registered Genkit action and read the result. Fixed on 2026-06-18.","status":"published","published":"2026-08-11T16:17:34.113Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-644"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}