Vulnerability · Published Mar 11, 2026 · Assigned by GitHub_M

CVE-2026-32094Shescape escape() leaves bracket glob expansion active on Bash, BusyBox, and Dash

Medium 6.9

In plain English

A medium-severity information exposure in shescape from ericcornelissen. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)0.3%top 83.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Shescape is a simple shell escape library for JavaScript. Prior to 2.1.10, Shescape#escape() does not escape square-bracket glob syntax for Bash, BusyBox sh, and Dash. Applications that interpolate the return value directly into a shell command string can cause an attacker-controlled value like secret[12] to expand into multiple filesystem matches instead of a single literal argument, turning one argument into multiple trusted-pathname matches. This vulnerability is fixed in 2.1.10.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	shescape	2.1.10	GHSA-9jfh-9xrq-4vwm

Affected products (as reported)

Vendor	Product	Versions
ericcornelissen	shescape	< 2.1.10

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

References

https://github.com/ericcornelissen/shescape/security/advisories/GHSA-9jfh-9xrq-4vwm x_refsource_CONFIRM
https://github.com/ericcornelissen/shescape/commit/6add105c6f6b508662bb5ae3b3bdd4c9bcebf37a x_refsource_MISC