{"id":"CVE-2026-73055","summary":"Shescape before 2.1.15 Home Directory Disclosure via BusyBox","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.","aliases":["GHSA-j44h-fqhh-fh28"],"modified":"2026-08-18T03:31:23.095894038Z","published":"2026-08-15T21:44:54.677Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73055.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-116"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73055.json"},{"type":"ADVISORY","url":"https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j44h-fqhh-fh28"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73055"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/shescape-before-home-directory-disclosure-via-busybox"},{"type":"FIX","url":"https://github.com/ericcornelissen/shescape/commit/7cba30594c16a21524706efe2f6c6c9d8923f411"},{"type":"FIX","url":"https://github.com/ericcornelissen/shescape/commit/d86bf2ae22961c73458bddf70dd06adf9dadb36c"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ericcornelissen/shescape","events":[{"introduced":"0"},{"fixed":"107771e62c86af15fdb2638189ed329ed26c24d3"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.1.15"}],"source":"AFFECTED_FIELD"}}],"versions":["v2.1.14","v2.1.13","v2.1.12","v2.1.11","v2.1.10","v2.1.9","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1.0","v2.0.2","v2.0.1","v2.0.0","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0","v1.6.7","v1.6.6","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.10","v1.5.9","v1.5.8","v1.5.7","v1.5.6","v1.5.5","v1.5.4","v1.5.3","v1.5.2","v1.5.1","v1.5.0","v1.4.0","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.1","v1.2.0","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.0","v0.4.1","v0.4.0","v0.3.1","v0.3.0","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73055.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}