{"id":"CVE-2026-102422","title":"shell-quote's `quote()` function emits a `{ comment }` token as `#` followed by its text, which comments out the rest of the shell line, including the opening quote of any later string token","summary":"shell-quote's `quote()` function emits a `{ comment }` token as `#` followed by its text, which comments out the rest of the shell line, including the opening quote of any later string token. A line terminator (\\n, \\r, U+2028, U+2029) in…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"product":"shell-quote","affected":["shell-quote >= 1.8.4 < 1.11.0"],"published":"2026-09-29","updated":"2026-09-29","sourceUpdated":"2026-09-29T04:17:55.707","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102422","references":[{"url":"https://github.com/ljharb/shell-quote","label":"7ffcee3d-2c14-4c3e-b844-86c6a321a158"},{"url":"https://github.com/ljharb/shell-quote/commit/6002b2ed90c6b83095eb272b6b0adaf3a172b0bc","label":"7ffcee3d-2c14-4c3e-b844-86c6a321a158"},{"url":"https://github.com/ljharb/shell-quote/security/advisories/GHSA-pqg4-j6r4-53mv","label":"7ffcee3d-2c14-4c3e-b844-86c6a321a158"},{"url":"https://www.npmjs.com/package/shell-quote","label":"7ffcee3d-2c14-4c3e-b844-86c6a321a158"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-29T04:27:15.487Z","slug":"CVE-2026-102422","body":"## Overview\n\nshell-quote's `quote()` function emits a `{ comment }` token as `#` followed by its text, which comments out the rest of the shell line, including the opening quote of any later string token. A line terminator (\\n, \\r, U+2028, U+2029) in that later string therefore ends the comment, and the rest of the string is parsed as shell input: `quote(['echo', 'ok', { comment: 'x' }, 'a\\nid;#'])` runs `id` in sh, bash, dash, ksh and zsh. `parse()` emits a comment token for a `#` in the middle of a word (for example `http://example.com/#frag`), so callers that combine `parse()` output with another untrusted string, such as `quote(parse(untrustedCommand).concat(untrustedArg))`, are affected. The fix for CVE-2026-9277 rejected line terminators in the comment's own text, but not in the tokens after it. Fixed in 1.11.0: `quote()` throws a `TypeError` when a string after a `{ comment }` token contains a line terminator.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}