{"id":"CVE-2024-29019","aliases":["GHSA-5925-88xh-6h99","PYSEC-2026-1327"],"url":"https://o3.security/vulnerability/CVE-2024-29019","summary":"ESPHome vulnerable to Authentication bypass via Cross site request forgery","details":"### Summary\nAPI endpoints in dashboard component of ESPHome version 2023.12.9 (command line installation) are vulnerable to Cross-Site Request Forgery (CSRF) allowing remote attackers to carry out attacks against a logged user of the dashboard to perform operations on configuration files (create, edit, delete).\n\n### Details\nIt is possible for a malicious actor to create a specifically crafted web page that triggers a cross site request against ESPHome, this allows bypassing the authentication for API calls on the platform.\n\n### PoC\nAn example of malicious web page that abuses this vulnerability:\n\n\n\n \n\t
\n \t\n\t
\n\n\t\n\n\t\n \n\n\nIn which an attacker creates and weaponizes \"poc.yaml\" config file containing a cookie exfiltration script and forces the payload triggering visiting the vulnerable page.\n\n\nExample of such script:\n\n\n\n### Impact\nThis vulnerability allows bypassing authentication on API calls accessing configuration file operations on the behalf of a logged user. In order to trigger the vulnerability, the victim must visit a weaponized page.\n\nIn addition to this, it is possible to chain this vulnerability with GHSA-9p43-hj5j-96h5 (as seen in the PoC) to obtain a complete takeover of the user account.\n\n","published":"2024-03-21T15:54:42.548Z","modified":"2026-08-12T03:51:42.310362580Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"esphome","fixedVersion":"2024.3.0"}],"fix":{"url":"https://github.com/esphome/esphome/pull/6396","label":"esphome/esphome#6396"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/29xxx/CVE-2024-29019.json"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-9p43-hj5j-96h5"},{"type":"ADVISORY","url":"https://github.com/esphome/esphome/security/advisories/GHSA-5925-88xh-6h99"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-29019"},{"type":"WEB","url":"https://github.com/esphome/esphome/pull/6396"},{"type":"WEB","url":"https://github.com/esphome/esphome/pull/6397"},{"type":"WEB","url":"https://github.com/esphome/esphome/commit/c56c40cb824e34ed2b89ba1cb8a3a5eb31459c74"},{"type":"PACKAGE","url":"https://github.com/esphome/esphome"},{"type":"WEB","url":"https://github.com/esphome/esphome/releases/tag/2024.3.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:42.310362580Z"}}