medium4.8
CVE-2026-73055
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 explici…
Impact
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
| Product | Affected versions |
|---|---|
| Shescape | before 2.1.15 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/ericcornelissen/shescape/commit/7cba30594c16a21524706efe2f6c6c9d8923f411
- https://github.com/ericcornelissen/shescape/commit/d86bf2ae22961c73458bddf70dd06adf9dadb36c
- https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j44h-fqhh-fh28
- https://www.vulncheck.com/advisories/shescape-before-home-directory-disclosure-via-busybox