{"id":"GHSA-698v-4r3x-3vcv","summary":"launch-editor: escapeCmdArgs() omits % escaping on Windows","details":"### Summary\n\n`launch-editor` did not escape `%` on Windows when passing an argument to `cmd`. When an environment variable contained a malicious value, it was possible that that content to be executed.\n\n### Impact\n\nOnly apps that match all of the following conditions are affected:\n\n- The user uses Windows\n- An attacker can place a file with the malicious filename containing `&` or `%`\n- Either of\n  - An attacker can inject an environment variable with a malicious value\n  - An attacker can add a NTFS alternate data stream to the file placed\n\n### Details\n\nUnlike `.sh` files, `.bat` / `.cmd` files on Windows cannot be called directly using [`child_process.spawn`](https://nodejs.org/docs/latest-v24.x/api/child_process.html#child_processspawncommand-args-options) and requires passing them as an argument of `cmd.exe`. To do so, launch-editor escapes the arguments passed to `cmd.exe`. But `launch-editor` did not escape `%` which is used for environment variables.\n\nBecause `launch-editor` checks if the argument matches an existing filename, the attack requires the attacker to be able to place a file.\n\n- If the attacker can inject an environment variable as well, they can include the subcommand in the env variable (e.g. set ` &calc.exe ` to `%ENV%`) and call `launchEditor` with `something%ENV%`.\n- If the attacker can place a NTFS alternate data stream to the file (e.g. a NTFS alternate data stream named `~-38%calc.exe`), they can call `launchEditor` with `something %CMDCMDLINE:~-38%calc.exe`.\n- If the attacker can create a filename containing the `%CD%` and the subcommand (e.g. `&calc.exe `), they can call `launchEditor` with `./%CD%`","aliases":["CVE-2026-112943"],"modified":"2026-10-20T18:45:09.467993691Z","published":"2026-10-20T18:30:24Z","database_specific":{"github_reviewed_at":"2026-10-20T18:30:24Z","nvd_published_at":"2026-10-20T15:17:17Z","cwe_ids":["CWE-78"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/vitejs/launch-editor/security/advisories/GHSA-698v-4r3x-3vcv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112943"},{"type":"WEB","url":"https://github.com/vitejs/launch-editor/pull/155"},{"type":"WEB","url":"https://github.com/vitejs/launch-editor/commit/3c2f9bf2ff8fe63d056a8f9cc52d825b66ca79fc"},{"type":"PACKAGE","url":"https://github.com/vitejs/launch-editor"},{"type":"WEB","url":"https://github.com/vitejs/launch-editor/releases/tag/v2.14.2"}],"affected":[{"package":{"name":"launch-editor","ecosystem":"npm","purl":"pkg:npm/launch-editor"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.14.2"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 2.14.1","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-698v-4r3x-3vcv/GHSA-698v-4r3x-3vcv.json"}},{"package":{"name":"vite","ecosystem":"npm","purl":"pkg:npm/vite"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.3.0"},{"fixed":"8.3.3"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 8.3.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-698v-4r3x-3vcv/GHSA-698v-4r3x-3vcv.json"}},{"package":{"name":"vite","ecosystem":"npm","purl":"pkg:npm/vite"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.2.0"},{"fixed":"8.2.4"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 8.2.3","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-698v-4r3x-3vcv/GHSA-698v-4r3x-3vcv.json"}},{"package":{"name":"vite","ecosystem":"npm","purl":"pkg:npm/vite"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0"},{"fixed":"8.1.6"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 8.1.5","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-698v-4r3x-3vcv/GHSA-698v-4r3x-3vcv.json"}},{"package":{"name":"vite","ecosystem":"npm","purl":"pkg:npm/vite"},"ranges":[{"type":"SEMVER","events":[{"introduced":"7.0.0"},{"fixed":"7.3.7"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 7.3.6","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-698v-4r3x-3vcv/GHSA-698v-4r3x-3vcv.json"}},{"package":{"name":"vite","ecosystem":"npm","purl":"pkg:npm/vite"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.4.4"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 6.4.3","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-698v-4r3x-3vcv/GHSA-698v-4r3x-3vcv.json"}},{"package":{"name":"vite-plus","ecosystem":"npm","purl":"pkg:npm/vite-plus"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.1.0"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 1.0.0","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-698v-4r3x-3vcv/GHSA-698v-4r3x-3vcv.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"}]}