CVE-2022-31180

CRITICAL

shescape 1.4.0-1.5.7 - Command Injection via Interpolation Option

Title source: llm
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/ericcornelissen/shescape/pull/322
Patch, Third Party Advisory x_refsource_misc
https://github.com/ericcornelissen/shescape/pull/324
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/ericcornelissen/shescape/releases/tag/v1.5.7
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/ericcornelissen/shescape/releases/tag/v1.5.8

Scores

CVSS v3 9.8
EPSS 0.0108
EPSS Percentile 78.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-74
Status published
Products (2)
npm/shescape 1.4.0 - 1.5.8npm
shescape_project/shescape 1.4.0 - 1.5.8
Published Aug 01, 2022
Tracked Since Feb 18, 2026