{"id":"CVE-2022-36077","aliases":["GHSA-p2jh-44qj-pf2v"],"url":"https://o3.security/vulnerability/CVE-2022-36077","summary":"Electron subject to Exfiltration of hashed SMB credentials on Windows via file:// redirect","details":"### Impact\nWhen following a redirect, Electron delays a check for redirecting to file:// URLs from other schemes. The contents of the file is not available to the renderer following the redirect, but if the redirect target is a SMB URL such as `file://some.website.com/`, then in some cases, Windows will connect to that server and attempt NTLM authentication, which can include sending hashed credentials.\n\n### Patches\nThis issue has been fixed in all current stable versions of Electron. Specifically, these versions contain the fixes:\n\n- 21.0.0-beta.1\n- 20.0.1\n- 19.0.11\n- 18.3.7\n\nWe recommend all apps upgrade to the latest stable version of Electron.\n\n### Workarounds\nIf upgrading isn't possible, this issue can be addressed without upgrading by preventing redirects to file:// URLs in the `WebContents.on('will-redirect')` event, for all WebContents:\n\n```js\napp.on('web-contents-created', (e, webContents) => {\n  webContents.on('will-redirect', (e, url) => {\n    if (/^file:/.test(url)) e.preventDefault()\n  })\n})\n```\n\n### For more information\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org).\n\n### Credit\nThanks to user @coolcoolnoworries for reporting this issue.","published":"2022-11-08T00:00:00Z","modified":"2026-08-12T03:51:27.374427277Z","cvss":{"score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:L"},"epss":{"score":0.00537,"percentile":0.42908,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"electron","fixedVersion":"18.3.7"},{"ecosystem":"npm","name":"electron","fixedVersion":"20.0.1"},{"ecosystem":"npm","name":"electron","fixedVersion":"19.0.11"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/36xxx/CVE-2022-36077.json"},{"type":"ADVISORY","url":"https://github.com/electron/electron/security/advisories/GHSA-p2jh-44qj-pf2v"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-36077"},{"type":"PACKAGE","url":"https://github.com/electron/electron"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:27.374427277Z"}}