TI-2026-51264 Aliases CVE-2026-73055 GHSA-jfpg-hfv5-2rf7

Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox

LOW 36CWE-116Published 2026-08-15 · Updated 2026-08-31

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: Present
Impact type: Information disclosure
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00355 29th percentileScored 2026-11-07

Fix Fixed shescape (ericcornelissen): 2.1.15, 3.0.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ericcornelissen	shescape	before 2.1.15; 3.0.0 to before 3.0.2	2.1.15, 3.0.2	Patch available	CNA

shescape Vendorericcornelissen Affected before 2.1.15; 3.0.0 to before 3.0.2 Fixed in 2.1.15, 3.0.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:shescape_project:shescape::::::::	—	—	ericcornelissen

cpe:2.3:a:shescape_project:shescape:*:*:*:*:*:*:*:* Versions — — ·ericcornelissen

Remediation

Fix · CNA shescape (ericcornelissen) Fixed in 2.1.15, 3.0.2

Timeline

2026-10-02 Threatist record created from CVE-2026-73055
2026-10-03 Alias added: GHSA-jfpg-hfv5-2rf7

References

Patch 2

Advisory 1

GitHub Security Advisory (GHSA-j44h-fqhh-fh28)

TI-2022-13220 Insufficient escaping of whitespace in shescape CVSS 3.1CRITICAL 9.8
TI-2022-13219 Insufficient escaping of line feeds for CMD in shescape CVSS 3.1CRITICAL 9.8
TI-2022-09469 Regular expression denial of service (ReDoS) in shescape CVSS 3.1HIGH 7.5
TI-2026-24632 Shescape escape() leaves bracket glob expansion active on Bash, BusyBox, and Dash CVSS 4.0MEDIUM 6.9
TI-2022-16487 Shescape Inefficient Regular Expression Complexity vulnerability CVSS 3.1HIGH 7.5
TI-2022-08540 Exposure of home directory through shescape on Unix with Bash CVSS 3.1MEDIUM 6.2

See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences