CVE-2022-29255
High
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.
SeverityHigh
CVSS8.2
Exploit probability—
Product
Vyper
PublishedJun 9, 2022
First seenJun 9, 2022
Weakness typeCWE-670CWE-670
How to fix
Update
- vyperlang vyper0.3.4 or later
- vyper0.3.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vyperlang vyper | v < 0.3.4 | 0.3.4 |
| vyperPyPI | v < 0.3.4 | 0.3.4 |
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