---
cve: "CVE-2026-73055"
severity: "MEDIUM"
cvss: 6.3
epss: "0.2%"
vendor: "ericcornelissen"
kev: false
exploited: false
published: "2026-08-15 22:16:55"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T21:58:53+02:00"
---

# CVE-2026-73055

> 6.3 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 107771e62c86af15fdb2638189ed329ed26c24d3 (Commit)
- 21b71c30df49ec2fa2ff7331526bbaeb46af8b0f (Commit)

## Referenzen

- <https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j44h-fqhh-fh28>
- <https://github.com/ericcornelissen/shescape/commit/d86bf2ae22961c73458bddf70dd06adf9dadb36c>
- <https://github.com/ericcornelissen/shescape/commit/7cba30594c16a21524706efe2f6c6c9d8923f411>
- <https://www.vulncheck.com/advisories/shescape-before-home-directory-disclosure-via-busybox>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73055) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_