PYSEC-2025-30

vyper is a Pythonic Smart Contract Language for the EVM. Multiple evaluation of a single expression is possible in the iterator target of a for loop. While the iterator expression cannot produce multiple writes, it can consume side effects produced in the loop body e.g. read a storage variable...

PT-2025-7630 · Vyper · Vyper

Name of the Vulnerable Software and Affected Versions: Vyper versions prior to 0.4.1 Description: The issue concerns the potential for multiple evaluations of a single expression in the iterator target of a for loop, which can lead to unexpected program behavior. Specifically, reads in iterators...