EUVD-2025-15445

Malicious code in bioql PyPI...

GHSA-QHR6-MGQR-MCHM Vyper's `concat()` builtin may elide side-effects for zero-length arguments

Impact concat may skip evaluation of side effects when the length of an argument is zero. this is due to a fastpath in the implementation which skips evaluation of argument expressions when their length is zero:...

Vyper's `concat()` builtin may elide side-effects for zero-length arguments

Impact concat may skip evaluation of side effects when the length of an argument is zero. this is due to a fastpath in the implementation which skips evaluation of argument expressions when their length is zero:...

CVE-2025-47285 Vyper's `concat()` builtin may elide side-effects for zero-length arguments

Vyper is the Pythonic Programming Language for the Ethereum Virtual Machine. In versions up to and including 0.4.2rc1, concat may skip evaluation of side effects when the length of an argument is zero. This is due to a fastpath in the implementation which skips evaluation of argument expressions...

CVE-2025-47285

CVE-2025-47285 affects Vyper up to and including 0.4.2rc1, where the built-in concat() may skip evaluation of side effects when an argument has zero length due to a fastpath in the implementation. The issue arises because argument expressions with zero length may bypass evaluation, which could su...