{"id":"CVE-2024-27307","aliases":["GHSA-fqg8-vfv7-8fj8"],"url":"https://o3.security/vulnerability/CVE-2024-27307","summary":"JSONata expression can pollute the \"Object\" prototype","details":"JSONata is a JSON query and transformation language. Starting in version 1.4.0 and prior to version 1.8.7 and 2.0.4, a malicious expression can use the transform operator to override properties on the `Object` constructor and prototype. This may lead to denial of service, remote code execution or other unexpected behavior in applications that evaluate user-provided JSONata expressions. This issue has been fixed in JSONata versions 1.8.7 and 2.0.4. Applications that evaluate user-provided expressions should update ASAP to prevent exploitation. As a workaround, one may apply the patch manually.","published":"2024-03-06T19:24:16.876Z","modified":"2026-07-15T01:48:53.396790558Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"jsonata","fixedVersion":"1.8.7"},{"ecosystem":"npm","name":"jsonata","fixedVersion":"2.0.4"}],"fix":{"url":"https://github.com/jsonata-js/jsonata/commit/1d579dbe99c19fbe509f5ba2c6db7959b0d456d1","label":"jsonata-js/jsonata@1d579db"},"references":[{"type":"WEB","url":"https://github.com/jsonata-js/jsonata/releases/tag/v2.0.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27307.json"},{"type":"ADVISORY","url":"https://github.com/jsonata-js/jsonata/security/advisories/GHSA-fqg8-vfv7-8fj8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-27307"},{"type":"FIX","url":"https://github.com/jsonata-js/jsonata/commit/1d579dbe99c19fbe509f5ba2c6db7959b0d456d1"},{"type":"FIX","url":"https://github.com/jsonata-js/jsonata/commit/335d38f6278e96c908b24183f1c9c90afc8ae00c"},{"type":"FIX","url":"https://github.com/jsonata-js/jsonata/commit/c907b5e517bb718015fcbd993d742ba6202f2be2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:53.396790558Z"}}