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Vulnerability · Published Aug 12, 2026 · Assigned by GitHub_M

CVE-2026-73411Shescape: Home-directory disclosure in assignment context on Unix with Dash

Medium 6.3

In plain English

A medium-severity information exposure in shescape from ericcornelissen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)6.3Medium
Exploit odds (30 days)0.6%top 51.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npmshescape2.1.14GHSA-q53c-4prm-w95q
npmshescape3.0.1GHSA-q53c-4prm-w95q

Affected products (as reported)

VendorProductVersions
ericcornelissen shescape < 2.1.14>= 3.0.0, < 3.0.1

Weakness: CWE-116, CWE-200 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

References