CVE-2026-9277
Gravedad CVSS v4.0:
CRÍTICA
Tipo:
CWE-77
Neutralización incorrecta de elementos especiales usados en un comando (Inyección de comando)
Fecha de publicación:
22/05/2026
Última modificación:
02/07/2026
Descripción
*** Pendiente de traducción *** shell-quote's `quote()` function did not validate object-token inputs against the operator model used by `parse()`. The `.op` field was backslash-escaped character by character using `/(.)/g`, which in JavaScript does not match line terminators (\n, \r, U+2028, U+2029). A line terminator in `.op` therefore passed through unescaped into the output; POSIX shells treat a literal newline as a command separator, so any content after it would execute as a second command. The vulnerable code path is reachable in two ways: (1) direct construction of `{ op: '...\n...' }` from external input, and (2) via `parse(cmd, envFn)` when `envFn` returns object tokens whose `.op` is attacker-influenced. Both are documented API surface. Fixed by replacing the per-character escape with strict shape validation: `.op` must match the parser's control-operator allowlist; `{ op: 'glob', pattern }` validates `pattern` and forbids line terminators; `{ comment }` validates `comment` and forbids line terminators; any other object shape throws `TypeError`.
Impacto
Puntuación base 4.0
9.20
Gravedad 4.0
CRÍTICA
Puntuación base 3.x
8.10
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://github.com/ljharb/shell-quote
- https://github.com/ljharb/shell-quote/commit/1518179
- https://github.com/ljharb/shell-quote/security/advisories/GHSA-w7jw-789q-3m8p
- https://www.npmjs.com/package/shell-quote
- http://www.openwall.com/lists/oss-security/2026/05/23/2
- https://access.redhat.com/errata/RHSA-2026:26072
- https://access.redhat.com/errata/RHSA-2026:26077
- https://access.redhat.com/errata/RHSA-2026:26079
- https://access.redhat.com/errata/RHSA-2026:26080
- https://access.redhat.com/errata/RHSA-2026:26090
- https://access.redhat.com/errata/RHSA-2026:26225
- https://access.redhat.com/errata/RHSA-2026:26234
- https://access.redhat.com/errata/RHSA-2026:28010
- https://access.redhat.com/errata/RHSA-2026:28571
- https://access.redhat.com/errata/RHSA-2026:29197
- https://access.redhat.com/errata/RHSA-2026:29795
- https://access.redhat.com/errata/RHSA-2026:29834
- https://access.redhat.com/errata/RHSA-2026:30076
- https://access.redhat.com/errata/RHSA-2026:33574
- https://access.redhat.com/errata/RHSA-2026:33683
- https://access.redhat.com/errata/RHSA-2026:34342
- https://access.redhat.com/security/cve/CVE-2026-9277
- https://bugzilla.redhat.com/show_bug.cgi?id=2480741
- https://github.com/ljharb/shell-quote/security/advisories/GHSA-w7jw-789q-3m8p
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-9277.json



