Vulnerability-Lookup

CVE-2026-102422 (GCVE-0-2026-102422)

Vulnerability from cvelistv5 – Published: 2026-09-29 03:47 – Updated: 2026-09-30 15:18

Title

shell-quote `quote()` command injection via a line terminator in a token after a `{ comment }` 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 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.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

9.2 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-30 15:18 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

harborist CNA under the redhat root

CNA scorecard B 85/100 over 14 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/ljharb/shell-quote/security/ad…	vendor-advisory
https://github.com/ljharb/shell-quote/commit/6002…	patch
https://github.com/ljharb/shell-quote	product
https://www.npmjs.com/package/shell-quote	product

Impacted products

1 product

Vendor	Product	Version	CPE status
	shell-quote	Affected: 1.8.4 , < 1.11.0 (semver)

Credits

Eurico Nicacio (@euriconicacio) Jordan Harband (@ljharb)

Show details on NVD website

JSON

To clipboard

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                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-78",
                  "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-29T03:47:36.376Z",
            "orgId": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
            "shortName": "harborist"
          },
          "references": [
            {
              "name": "GHSA-pqg4-j6r4-53mv",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://github.com/ljharb/shell-quote/security/advisories/GHSA-pqg4-j6r4-53mv"
            },
            {
              "name": "Fix commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/ljharb/shell-quote/commit/6002b2ed90c6b83095eb272b6b0adaf3a172b0bc"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://github.com/ljharb/shell-quote"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://www.npmjs.com/package/shell-quote"
            }
          ],
          "source": {
            "advisory": "GHSA-pqg4-j6r4-53mv",
            "discovery": "EXTERNAL"
          },
          "title": "shell-quote `quote()` command injection via a line terminator in a token after a `{ comment }` token"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
        "assignerShortName": "harborist",
        "cveId": "CVE-2026-102422",
        "datePublished": "2026-09-29T03:47:36.376Z",
        "dateReserved": "2026-09-29T03:43:27.967Z",
        "dateUpdated": "2026-09-29T03:47:36.376Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

UBUNTU-CVE-2026-102422 (CVE-2026-102422)

Vulnerability from osv_ubuntu – Published: 2026-09-29 04:17 – Updated: 2026-10-17 10:01 – Source website

Details

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.

Severity

8.1 (High)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

9.2 (Critical)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-102422	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-102422	REPORT
	https://github.com/ljharb/shell-quote	REPORT
	https://github.com/ljharb/shell-quote/commit/6002…	REPORT
	https://github.com/ljharb/shell-quote/security/ad…	REPORT
	https://www.npmjs.com/package/shell-quote	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-shell-quote",
            "binary_version": "1.6.1+20160617-git72fb5a8ce29b-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "node-shell-quote",
        "purl": "pkg:deb/ubuntu/node-shell-quote@1.6.1+20160617-git72fb5a8ce29b-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.1+20160617-git72fb5a8ce29b-1",
        "1.6.1+20160617-git72fb5a8ce29b-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-shell-quote",
            "binary_version": "1.7.3+~1.7.1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "node-shell-quote",
        "purl": "pkg:deb/ubuntu/node-shell-quote@1.7.3+~1.7.1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.7.3+~1.7.1-1",
        "1.7.3+~1.7.1-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-shell-quote",
            "binary_version": "1.7.4+~1.7.1-1ubuntu0.24.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "node-shell-quote",
        "purl": "pkg:deb/ubuntu/node-shell-quote@1.7.4+~1.7.1-1ubuntu0.24.04.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.7.4+~1.7.1-1",
        "1.7.4+~1.7.1-1ubuntu0.24.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-shell-quote",
            "binary_version": "1.10.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "node-shell-quote",
        "purl": "pkg:deb/ubuntu/node-shell-quote@1.10.0-1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.8.3+~1.7.5-1",
        "1.9.0+~1.7.5-1",
        "1.10.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "node-shell-quote",
            "binary_version": "1.8.3+~1.7.5-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "node-shell-quote",
        "purl": "pkg:deb/ubuntu/node-shell-quote@1.8.3+~1.7.5-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.7.4+~1.7.1-1",
        "1.8.3+~1.7.5-1",
        "1.8.3+~1.7.5-1ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "shell-quote\u0027s `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([\u0027echo\u0027, \u0027ok\u0027, { comment: \u0027x\u0027 }, \u0027a\\nid;#\u0027])` 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\u0027s 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.",
  "id": "UBUNTU-CVE-2026-102422",
  "modified": "2026-10-17T10:01:18Z",
  "published": "2026-09-29T04:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-102422"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-102422"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ljharb/shell-quote"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ljharb/shell-quote/commit/6002b2ed90c6b83095eb272b6b0adaf3a172b0bc"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ljharb/shell-quote/security/advisories/GHSA-pqg4-j6r4-53mv"
    },
    {
      "type": "REPORT",
      "url": "https://www.npmjs.com/package/shell-quote"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-102422"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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