{"id":"CVE-2026-73055","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-73055","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\"…","details":"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.","published":"2026-08-15T22:16:55.427","modified":"2026-08-15T22:16:55.427","cvss":{"score":4.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/ericcornelissen/shescape/commit/7cba30594c16a21524706efe2f6c6c9d8923f411","label":"ericcornelissen/shescape@7cba305"},"references":[{"type":"WEB","url":"https://github.com/ericcornelissen/shescape/commit/7cba30594c16a21524706efe2f6c6c9d8923f411"},{"type":"WEB","url":"https://github.com/ericcornelissen/shescape/commit/d86bf2ae22961c73458bddf70dd06adf9dadb36c"},{"type":"WEB","url":"https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j44h-fqhh-fh28"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/shescape-before-home-directory-disclosure-via-busybox"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-15T22:16:55.427"}}