CVE-2025-65570

A type confusion in jsish 2.0 allows incorrect control flow during execution of the OPNEXT 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...

CVE-2025-65570

CVE-2025-65570 describes a type confusion in jsish 2.0 where, inside a for-in loop, an array element access used as the left-hand operand in an instanceof expression leaves an extra array reference on the stack. When OP_NEXT runs, it may treat the array as an iterator object and read an invalid f...