{"id":"CVE-2026-73055","aliases":["EUVD-2026-59804","GHSA-j44h-fqhh-fh28","GHSA-jfpg-hfv5-2rf7"],"status":"published","title":"Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox","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.","severity":{"version":"4.0","score":6.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00355,"percentile":0.29457,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-116","CWE-200"],"published":"2026-08-15T21:44:54Z","modified":"2026-10-28T02:30:48Z","products":[{"vendor":"ericcornelissen","product":"shescape"}],"references":[{"url":"https://github.com/ericcornelissen/shescape/security/advisories/GHSA-j44h-fqhh-fh28","tags":["vendor-advisory","advisory"]},{"url":"https://github.com/ericcornelissen/shescape/commit/d86bf2ae22961c73458bddf70dd06adf9dadb36c","tags":["patch","fix"]},{"url":"https://github.com/ericcornelissen/shescape/commit/7cba30594c16a21524706efe2f6c6c9d8923f411","tags":["patch","fix"]},{"url":"https://www.vulncheck.com/advisories/shescape-before-home-directory-disclosure-via-busybox","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73055","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jfpg-hfv5-2rf7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73055.json","tags":["advisory"]},{"url":"https://github.com/ericcornelissen/shescape","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-73055","title":"Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox","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.","status":"published","published":"2026-08-15T21:44:54.677Z","modified":"2026-08-31T14:08:21.499Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-116","CWE-200"],"updated_at":"2026-11-02T13:43:22.599321Z"}],"euvd":[{"id":"EUVD-2026-59804","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.","status":"published","published":"2026-08-15T21:44:54Z","modified":"2026-08-31T14:08:21Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T18:01:21.100116Z"}],"ghsa":[{"id":"GHSA-jfpg-hfv5-2rf7","title":"Shescape before 2.1.15 (and 3.0.0 before 3.0.2) fails to properly escape tilde (~) characters in...","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.","status":"published","published":"2026-08-16T00:31:28Z","modified":"2026-08-16T00:31:29Z","cvss":[{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T15:10:31.619287Z"}],"nvd":[{"id":"CVE-2026-73055","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.","status":"published","published":"2026-08-15T22:16:55.427Z","modified":"2026-08-31T15:17:43.303Z","cvss":[{"version":"4.0","score":6.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-116","CWE-200"],"updated_at":"2026-11-02T14:12:38.29747Z"}],"osv":[{"id":"CVE-2026-73055","title":"Shescape before 2.1.15 and 3.0.2 Home Directory Disclosure via BusyBox","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.","status":"published","published":"2026-08-15T21:44:54.677Z","modified":"2026-10-28T02:30:48.706855254Z","cvss":[{"version":"4.0","score":6.3,"vector":"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","level":"medium"}],"cwes":["CWE-116","CWE-200"],"updated_at":"2026-11-02T15:45:15.88521Z"}]}}