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Critical

Insufficient escaping of whitespace in shescape

Type: advisorySources: OSV

Shescape is a simple shell escape package for JavaScript. Affected versions were found to have insufficient escaping of white space when interpolating output. This issue only impacts users that use the `escape` or `escapeAll` functions with the `interpolation` option set to `true`. The result is that if an attacker is able to include whitespace in their input they can: 1. Invoke shell-specific behaviour through shell-specific special characters inserted directly after whitespace. 2. Invoke shell-specific behaviour through shell-specific special characters inserted or appearing after line terminating characters. 3. Invoke arbitrary commands by inserting a line feed character. 4. Invoke arbitrary commands by inserting a carriage return character. Behaviour number 1 has been patched in [v1.5.7] which you can upgrade to now. No further changes are required. Behaviour number 2, 3, and 4 have been patched in [v1.5.8] which you can upgrade to now. No further changes are required. The best workaround is to avoid having to use the `interpolation: true` option - in most cases using an alternative is possible, see [the recipes](https://github.com/ericcornelissen/shescape#recipes) for recommendations. Alternatively, users may strip all whitespace from user input. Note that this is error prone, for example: for PowerShell this requires stripping `'\u0085'` which is not included in JavaScript's definition of `\s` for Regular Expressions.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2022-31180
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 02:30 UTC · Revision 1

Source evidence

Insufficient escaping of whitespace in shescape

core-osv · Original source

Published 1 Aug 2022, 19:15 UTC

Shescape is a simple shell escape package for JavaScript. Affected versions were found to have insufficient escaping of white space when interpolating output. This issue only impacts users that use the `escape` or `escapeAll` functions with the `interpolation` option set to `true`. The result is that if an attacker is able to include whitespace in their input they can: 1. Invoke shell-specific behaviour through shell-specific special characters inserted directly after whitespace. 2. Invoke shell-specific behaviour through shell-specific special characters inserted or appearing after line terminating characters. 3. Invoke arbitrary commands by inserting a line feed character. 4. Invoke arbitrary commands by inserting a carriage return character. Behaviour number 1 has been patched in [v1.5.7] which you can upgrade to now. No further changes are required. Behaviour number 2, 3, and 4 have been patched in [v1.5.8] which you can upgrade to now. No further changes are required. The best workaround is to avoid having to use the `interpolation: true` option - in most cases using an alternative is possible, see [the recipes](https://github.com/ericcornelissen/shescape#recipes) for recommendations. Alternatively, users may strip all whitespace from user input. Note that this is error prone, for example: for PowerShell this requires stripping `'\u0085'` which is not included in JavaScript's definition of `\s` for Regular Expressions.

osv:CVE-2022-31180
Complete source record
{
  "id": "573836a6cf11e2adeb40ed8fd14db5224401bdee069ec9da6603872938a37fcb",
  "url": "https://osv.dev/vulnerability/CVE-2022-31180",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Insufficient escaping of whitespace in shescape",
    "summary": "Shescape is a simple shell escape package for JavaScript. Affected versions were found to have insufficient escaping of white space when interpolating output. This issue only impacts users that use the `escape` or `escapeAll` functions with the `interpolation` option set to `true`. The result is that if an attacker is able to include whitespace in their input they can: 1. Invoke shell-specific behaviour through shell-specific special characters inserted directly after whitespace. 2. Invoke shell-specific behaviour through shell-specific special characters inserted or appearing after line terminating characters. 3. Invoke arbitrary commands by inserting a line feed character. 4. Invoke arbitrary commands by inserting a carriage return character. Behaviour number 1 has been patched in [v1.5.7] which you can upgrade to now. No further changes are required. Behaviour number 2, 3, and 4 have been patched in [v1.5.8] which you can upgrade to now. No further changes are required. The best workaround is to avoid having to use the `interpolation: true` option - in most cases using an alternative is possible, see [the recipes](https://github.com/ericcornelissen/shescape#recipes) for recommendations. Alternatively, users may strip all whitespace from user input. Note that this is error prone, for example: for PowerShell this requires stripping `'\\u0085'` which is not included in JavaScript's definition of `\\s` for Regular Expressions.",
    "evidence": "osv:CVE-2022-31180",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2022-31180",
      "aliases": [
        "CVE-2022-31180",
        "GHSA-44vr-rwwj-p88h"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ericcornelissen/shescape",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8e0d66f7d69d12c96dce8fc9c539b7d9390dc425"
                },
                {
                  "fixed": "8b6a0eefe08f9cd4340c3364aa90dda0acb31f18"
                },
                {
                  "fixed": "10e1d0f64f38f97dac07d9a5ef1bd394393ed4b8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:shescape_project:shescape:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.4.0"
                      },
                      {
                        "fixed": "1.5.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "10e1d0f64f38f97dac07d9a5ef1bd394393ed4b8"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.5.7"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8b6a0eefe08f9cd4340c3364aa90dda0acb31f18"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.5.8"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.5.6",
            "v1.5.5",
            "v1.5.4",
            "v1.5.3",
            "v1.5.2",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-31180.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.001546214Z",
      "provider": "osv",
      "references": [
        "https://github.com/ericcornelissen/shescape/releases/tag/v1.5.7",
        "https://github.com/ericcornelissen/shescape/releases/tag/v1.5.8",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31180.json",
        "https://github.com/ericcornelissen/shescape/security/advisories/GHSA-44vr-rwwj-p88h",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-31180",
        "https://github.com/ericcornelissen/shescape/pull/322",
        "https://github.com/ericcornelissen/shescape/pull/324"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-74"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": ">=1.4.0 < 1.5.8"
                  },
                  {
                    "last_affected": ">=1.4.0 < 1.5.8"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandaloneSingleVersion"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31180.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-31180",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517373,
  "published_at": "2022-08-01T19:15:16+00:00"
}