{"id":"CVE-2025-65570","details":"A type confusion in jsish 2.0 allows incorrect control flow during execution of the OP_NEXT opcode. When an “instanceof” expression uses an array element access as the left-hand operand inside a for-in loop, the instructions implementation leaves an additional array reference on the stack rather than consuming it during OP_INSTANCEOF. As a result, OP_NEXT interprets the array as an iterator object and reads the iterCmd function pointer from an invalid structure, potentially causing a crash or enabling code execution depending on heap layout.","modified":"2026-07-15T01:48:59.802843785Z","published":"2025-12-29T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65570.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65570.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-65570"},{"type":"ARTICLE","url":"https://blog.mcsky.ro/writeups/2025/11/15/inline8-writeup.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pcmacdon/jsish","events":[{"introduced":"8154b7673827f8707065ff61306b8dad89571be3"},{"last_affected":"8154b7673827f8707065ff61306b8dad89571be3"}],"database_specific":{"cpe":"cpe:2.3:a:jsish:jsish:2.0:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.0"},{"last_affected":"2.0"}],"source":"CPE_STRING"}}],"versions":["2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-65570.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}