{"apiVersion":"1.0","identifier":"CVE-2026-77415","description":"JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.1, crafted JSONata expressions could chain several object-integrity weaknesses to execute arbitrary code. The chain could overwrite $clone to mutate objects through evaluateTransformExpression, expose and deconstruct JSONata functions or lambdas through $merge.*, replace proc.arguments.forEach used by applyProcedure, and forge internal lambda state. These primitives allowed an attacker to reach prototype getters, prototype and constructor access, and process.getBuiltinModule with child_process, executing code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.1.","publishedAt":"2026-08-21T21:17:07","lastModifiedAt":"2026-08-25T17:18:17","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77415","cvssScore":9.3,"cvssVector":"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","epssProbability":0.00508,"riskScore":0.97,"affectedProduct":"JSONata","affectedVersions":"<1.8.8, <2.2.1","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-77415","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-77415","en":"https://www.redsauce.net/en/cves/CVE-2026-77415","fr":"https://www.redsauce.net/fr/cves/CVE-2026-77415","pt":"https://www.redsauce.net/pt/cves/CVE-2026-77415","de":"https://www.redsauce.net/de/cves/CVE-2026-77415","sk":"https://www.redsauce.net/sk/cves/CVE-2026-77415","el":"https://www.redsauce.net/el/cves/CVE-2026-77415"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-77415"}}