Insufficient escaping of whitespace in shescape
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 sourcePublished 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"
}