{"id":"CVE-2026-57439","revision":"37358b47326a4ecc879f7f0d348f1dd2","records":[{"revision":"37358b47326a4ecc879f7f0d348f1dd2","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-57439","aliases":[],"title":"CyberChef: Prototype pollution in Series Chart operation","description":"CyberChef is a web app for encryption, encoding, compression, and data analysis. Prior to 11.2.0, the Series Chart operation accepts __proto__ as a key while parsing user-supplied CSV, allowing prototype pollution that can be chained with operations such as Parse UDP to inject malicious JavaScript into HTML output. This issue is fixed in version 11.2.0.","state":0,"publishedAt":"2026-07-08T14:58:38.693+00:00","modifiedAt":"2026-07-08T16:12:28.118+00:00","affected":[{"ecosystem":"Vendor product","name":"CyberChef","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"gchq\",\n                    \"product\": \"CyberChef\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 11.2.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":5,"severity":"MEDIUM"}],"references":["https://github.com/gchq/CyberChef/security/advisories/GHSA-fx6f-382r-j72c","https://github.com/gchq/CyberChef/issues/2568","https://github.com/gchq/CyberChef/pull/2569","https://github.com/gchq/CyberChef/commit/85db3be5d0096859b810f0e8d3e151d5dc9b948f","https://github.com/gchq/CyberChef/releases/tag/v11.2.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-57439","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-57439","identifiers":["CVE-2026-57439"]},"retained":false,"historicalAffected":[]}],"coverage":[]}