ericcornelissen Shescape up to 2.1.13/3.0.0 dash.js getEscapeFunction information disclosure

Summaryinfo

A vulnerability was found in ericcornelissen Shescape up to 2.1.13/3.0.0. It has been declared as problematic. Affected is the function getEscapeFunction of the file src/internal/unix/dash.js. Such manipulation leads to information disclosure. This vulnerability is traded as CVE-2026-73411. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in ericcornelissen Shescape up to 2.1.13/3.0.0. Affected by this issue is the function getEscapeFunction of the file src/internal/unix/dash.js. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

Shescape is a simple shell escape library for JavaScript. Prior to 2.1.14 and 3.0.1, getEscapeFunction in src/internal/unix/dash.js fails to escape ~ after : or = when applications use the escape or escapeAll APIs on Unix with shell set to dash, or with shell set to true when Dash is the default, and interpolate the result into an assignment prefixed to a command. An attacker who controls the input can supply a value such as :~ to disclose the home-directory path and may change the location on which the command operates. This issue is fixed in versions 2.1.14 and 3.0.1.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-73411 since 08/12/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 2.1.14 or 3.0.1 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• ericcornelissen

Name

• Shescape

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3
• 2.1.4
• 2.1.5
• 2.1.6
• 2.1.7
• 2.1.8
• 2.1.9
• 2.1.10
• 2.1.11
• 2.1.12
• 2.1.13
• 3.0

Website

• Product: https://github.com/ericcornelissen/shescape/

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