Vulnerability · Published Aug 15, 2026 · Assigned by VulnCheck

CVE-2026-73055Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox

Medium 4.8

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 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)4.8Medium

Exploit odds (30 days)0.4%top 70.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Shescape before 2.1.15 (and 3.0.0 before 3.0.2) fails to properly escape tilde (~) characters in assignment contexts on Unix systems where the shell is explicitly configured to "sh" or true and /bin/sh points to BusyBox. Using the escape and escapeAll APIs with untrusted input in an assignment prefixed to a command, an attacker can inject a tilde payload to disclose the user's home directory location and, depending on usage, alter the location on which a command operates.

Affected products (as reported)

Vendor	Product	Versions
ericcornelissen	shescape	0 – before 2.1.153.0.0 – before 3.0.2

Weakness: CWE-116, CWE-200 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-j44h-fqhh-fh28) vendor-advisory
Patch Commit patch
Patch Commit patch
VulnCheck Advisory: Shescape before 2.1.15 Home Directory Disclosure via BusyBox third-party-advisory