{"schema":"threatline.record/2","record":{"id":"CVE-2026-102422","aliases":["GHSA-pqg4-j6r4-53mv"],"summary":"shell-quote: `quote()` command injection via a line terminator in a token after a `{ comment }` token","details":"### Impact\n\n`quote()` 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 in that later string ends the comment, and the rest of the string is parsed as shell input:\n\n```js\nquote(['echo', 'ok', { comment: 'x' }, 'a\\nid;#']);\n// echo ok #x 'a\n// id;#'\n```\n\nPassed to `sh`, `bash`, `dash`, `ksh`, or `zsh`, this runs `id`.\n\n`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.\n\nExploitation requires an attacker-controlled string containing a line terminator that follows a `{ comment }` token in the same `quote()` call.\n\n### Patches\n\nFixed in v1.11.0: `quote()` throws a `TypeError` when a string after a `{ comment }` token contains a line terminator (`\\n`, `\\r`, U+2028, or U+2029).\n\n### Workarounds\n\nDrop every token after a `{ comment }` token before calling `quote()`, or reject line terminators in untrusted strings. Separately, do not append other shell text after `quote()` output that contains a comment, since the comment swallows it.","categories":["Libraries & packages"],"product":"shell-quote","vendor":"","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-pqg4-j6r4-53mv","source_modified_at":"2026-10-06T13:40:37Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"shell-quote"},"range":">= 1.8.4, < 1.11.0"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102422","source_modified_at":"2026-09-30T15:18:32.135Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"shell-quote","vendor":null,"versions":[{"status":"affected","version":"1.8.4","lessThan":"1.11.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pqg4-j6r4-53mv","source_modified_at":"2026-10-06T13:45:06.393196831Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"shell-quote","purl":"pkg:npm/shell-quote"},"ranges":[{"events":[{"introduced":"1.8.4"},{"fixed":"1.11.0"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-pqg4-j6r4-53mv","source_modified_at":"2026-10-06T13:40:37Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"shell-quote"},"version":"1.11.0"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102422","source_modified_at":"2026-09-30T15:18:32.135Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"shell-quote","ecosystem":null},"version":"1.11.0","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-pqg4-j6r4-53mv","source_modified_at":"2026-10-06T13:45:06.393196831Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"shell-quote","purl":"pkg:npm/shell-quote"},"version":"1.11.0"}],"cvss":9.2,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00383,"percentile":0.31106,"score_date":"2026-10-23"},"published_at":"2026-09-29T03:47:36.376Z","modified_at":"2026-10-06T13:45:06.393196831Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-pqg4-j6r4-53mv","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-06T13:40:37Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102422","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-09-30T15:18:32.135Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-pqg4-j6r4-53mv","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-06T13:45:06.393196831Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102422","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/ljharb/shell-quote/security/advisories/GHSA-pqg4-j6r4-53mv","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102422","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/ljharb/shell-quote/commit/6002b2ed90c6b83095eb272b6b0adaf3a172b0bc","tags":["patch"]},{"url":"https://github.com/advisories/GHSA-pqg4-j6r4-53mv","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/ljharb/shell-quote","tags":["product"]},{"source":"CVE List","url":"https://www.npmjs.com/package/shell-quote","tags":["product"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-09-30T15:18:10.710251Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-06T13:45:06.393196831Z","content_hash":"f5d6e52bc5b0ef29b217185d76a0614859a6500327530beccdd04a1fdad41490"}}