Vyper has a double eval in For List Iter

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 updated in the loop body and thus lead to unexpected progra...

CVE-2025-27104 double eval in For List Iter in Vyper

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...

CVE-2025-27104

Vulnerability CVE-2025-27104 affects vyper (Pythonic Smart Contract Language for the EVM): a for-loop iterator target can cause multiple evaluations of the iterator expression, allowing side effects from the loop body to be consumed and interleaved with reads in the loop, leading to unexpected pr...

Double Evaluation

vyper is vulnerable to a Double Evaluation. This vulnerability is due to the buildcreateIR function of the createfromblueprint builtin not caching the args argument, allowing for multiple evaluations instead of retrieving the value from the stack...

Double Evaluation

vyper is vulnerable to Double Evaluation. The vulnerability is due to the buildIR function of the sqrt builtin not caching the argument to the stack, allowing for multiple evaluations when the argument has side-effects...

vyper performs double eval of raw_args in create_from_blueprint

Summary Using the createfromblueprint builtin can result in a double eval vulnerability when rawargs=True and the args argument has side-effects. A contract search was performed and no vulnerable contracts were found in production. In particular, the rawargs variant of createfromblueprint was not...

GHSA-3WHQ-64Q2-QFJ6 vyper performs double eval of raw_args in create_from_blueprint

Summary Using the createfromblueprint builtin can result in a double eval vulnerability when rawargs=True and the args argument has side-effects. A contract search was performed and no vulnerable contracts were found in production. In particular, the rawargs variant of createfromblueprint was not...

PYSEC-2024-209

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the sqrt builtin can result in double eval vulnerability when the argument has side-effects. It can be seen that the buildIR function of the sqrt builtin doesn't cache the argument to...

PYSEC-2024-209

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the sqrt builtin can result in double eval vulnerability when the argument has side-effects. It can be seen that the buildIR function of the sqrt builtin doesn't cache the argument to...

PYSEC-2024-207

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the slice builtin can result in a double eval vulnerability when the buffer argument is either msg.data, self.code or .code and either the start or length arguments have side-effects...

PYSEC-2024-208

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the createfromblueprint builtin can result in a double eval vulnerability when rawargs=True and the args argument has side-effects. It can be seen that the buildcreateIR function of t...

PYSEC-2024-207

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the slice builtin can result in a double eval vulnerability when the buffer argument is either msg.data, self.code or .code and either the start or length arguments have side-effects...

PYSEC-2024-208

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the createfromblueprint builtin can result in a double eval vulnerability when rawargs=True and the args argument has side-effects. It can be seen that the buildcreateIR function of t...

CVE-2024-32649 vyper performs double eval of the argument of sqrt

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the sqrt builtin can result in double eval vulnerability when the argument has side-effects. It can be seen that the buildIR function of the sqrt builtin doesn't cache the argument to...

CVE-2024-32649 vyper performs double eval of the argument of sqrt

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the sqrt builtin can result in double eval vulnerability when the argument has side-effects. It can be seen that the buildIR function of the sqrt builtin doesn't cache the argument to...

CVE-2024-32649 vyper performs double eval of the argument of sqrt

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the sqrt builtin can result in double eval vulnerability when the argument has side-effects. It can be seen that the buildIR function of the sqrt builtin doesn't cache the argument to...

CVE-2024-32647 vyper performs double eval of raw_args in create_from_blueprint

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the createfromblueprint builtin can result in a double eval vulnerability when rawargs=True and the args argument has side-effects. It can be seen that the buildcreateIR function of t...

CVE-2024-32646 vyper performs double eval of the slice args when buffer from adhoc locations

Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the slice builtin can result in a double eval vulnerability when the buffer argument is either msg.data, self.code or .code and either the start or length arguments have side-effects...

PT-2024-24740 · Vyper · Vyper

Name of the Vulnerable Software and Affected Versions: Vyper versions 0.3.10 and prior Description: Using the create from blueprint builtin can result in a double eval vulnerability when raw args=True and the args argument has side-effects. The build create IR function of the create from blueprin...

PT-2024-24742 · Vyper · Vyper

Name of the Vulnerable Software and Affected Versions: Vyper versions 0.3.10 and prior Description: The issue arises from using the sqrt builtin in Vyper, which can result in a double eval vulnerability when the argument has side-effects. This occurs because the build IR function of the sqrt...