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CVE-2026-102422— shell-quote `quote()` command injection via a line terminator in a token after a `{ comment }` token

Quick assessment

Affected
shell-quote
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

shell-quote's function emits a 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

CVSS 8.1 · High
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I. Basic Information for CVE-2026-102422

Vulnerability Information

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Vulnerability Title
shell-quote `quote()` command injection via a line terminator in a token after a `{ comment }` token
Source: CVE Program / CVE List V5
Vulnerability Description
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 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- shell-quote 1.8.4 ~ 1.11.0 -

II. Public POCs for CVE-2026-102422

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III. Intelligence Information for CVE-2026-102422

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Other References for CVE-2026-102422 (1)

Other References for CVE-2026-102422 (2)

IV. Related Vulnerabilities

Same product: shell-quote
Same weakness: CWE-78

V. Comments for CVE-2026-102422

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