CVE-2026-73055
Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox
- State
- Published
- Severity
- 6.3 Medium
- Published
- Aug 15, 2026
- Updated
- Aug 31, 2026
- Reserved
- Aug 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | 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 | VulnCheck |
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
shescapeericcornelissen |
|
References
- GitHub Security Advisory (GHSA-j44h-fqhh-fh28)vendor-advisory
- Patch Commitpatch
- Patch Commitpatch
- VulnCheck Advisory: Shescape before 2.1.15 Home Directory Disclosure via BusyBoxthird-party-advisory
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