Description
Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions prior to 0.3.4 when a calling an external contract with no return value, the contract address (including side effects) could be evaluated twice. This may result in incorrect outcomes for contracts. This issue has been addressed in v0.3.4.
Scores
CVSS v3
8.2
EPSS
0.0037
EPSS Percentile
58.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-670
Status
published
Products (2)
pypi/vyper
0 - 0.3.4PyPI
vyperlang/vyper
< 0.3.4
Published
Jun 09, 2022
Tracked Since
Feb 18, 2026