CVE-2022-24725: Exposure of home directory through shescape on Unix with Bash

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-03-03 · updated 2026-06-17
Weakness: CWE-200

Description

Shescape is a shell escape package for JavaScript. An issue in versions 1.4.0 to 1.5.1 allows for exposure of the home directory on Unix systems when using Bash with the `escape` or `escapeAll` functions from the _shescape_ API with the `interpolation` option set to `true`. Other tested shells, Dash and Zsh, are not affected. Depending on how the output of _shescape_ is used, directory traversal may be possible in the application using _shescape_. The issue was patched in version 1.5.1. As a workaround, manually escape all instances of the tilde character (`~`) using `arg.replace(/~/g, "\\~")`.

Affected products

ericcornelissen shescape: from 1.4.0 before 1.5.1 — fixed in 1.5.1

How to fix

Upgrade to a fixed version: ericcornelissen shescape 1.5.1. Check the vendor advisory for mitigations.

References

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