{"cve":"CVE-2026-77413","nvd":{"published":"2026-08-21T21:17:07.267","modified":"2026-10-12T16:10:00.220","status":"Deferred","description":"JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.0, the src/functions.js lookup function lacked an Object.prototype.hasOwnProperty check and allowed crafted expressions to access inherited prototype members. An attacker able to supply an expression could use inherited prototype setters and getters, constructor access, valueOf, and process.getBuiltinModule to reach the child_process module and execute arbitrary code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.0.","cvss_v4":{"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","score":9.3},"cvss_v3":null,"cwes":["CWE-94"],"references":["https://github.com/jsonata-js/jsonata/commit/4b217d514376e30cba278941298d7ba97c4a6c6e","https://github.com/jsonata-js/jsonata/commit/4c5f4adfb90a9b500889d50f90050ca68888b50d","https://github.com/jsonata-js/jsonata/pull/794","https://github.com/jsonata-js/jsonata/releases/tag/v1.8.8","https://github.com/jsonata-js/jsonata/releases/tag/v2.2.0"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-77413","score":0.00719,"percentile":0.53597,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-8gq3-vp5j-2grp","url":"https://osv.dev/vulnerability/GHSA-8gq3-vp5j-2grp","summary":"JSONata: Arbitrary Code Execution via crafted JSONata expressions","modified":"2026-08-21T21:10:59.271102Z","packages":[{"ecosystem":"npm","name":"jsonata","purl":"pkg:npm/jsonata","ranges":["<1.8.8"],"fixed":["1.8.8"]},{"ecosystem":"npm","name":"jsonata","purl":"pkg:npm/jsonata","ranges":[">=2.0.0 <2.2.0"],"fixed":["2.2.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}