{"id":"CVE-2021-21384","aliases":["GHSA-f2rp-38vg-j3gh"],"url":"https://o3.security/vulnerability/CVE-2021-21384","summary":"Null characters not escaped","details":"shescape is a simple shell escape package for JavaScript. In shescape before version 1.1.3, anyone using _Shescape_ to defend against shell injection may still be vulnerable against shell injection if the attacker manages to insert a into the payload. For an example see the referenced GitHub Security Advisory. The problem has been patched in version 1.1.3. No further changes are required.","published":"2021-03-19T00:15:11.793Z","modified":"2026-07-09T00:21:53.169099Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"shescape","fixedVersion":"1.1.3"}],"fix":{"url":"https://github.com/ericcornelissen/shescape/commit/07a069a66423809cbedd61d980c11ca44a29ea2b","label":"ericcornelissen/shescape@07a069a"},"references":[{"type":"WEB","url":"https://www.npmjs.com/package/shescape"},{"type":"ADVISORY","url":"https://github.com/ericcornelissen/shescape/releases/tag/v1.1.3"},{"type":"FIX","url":"https://github.com/ericcornelissen/shescape/commit/07a069a66423809cbedd61d980c11ca44a29ea2b"},{"type":"EVIDENCE","url":"https://github.com/ericcornelissen/shescape/security/advisories/GHSA-f2rp-38vg-j3gh"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:21:53.169099Z"}}