CVE-2023-42441

Medium

Description

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). Starting in version 0.2.9 and prior to version 0.3.10, locks of the type `@nonreentrant("")` or `@nonreentrant('')` do not produce reentrancy checks at runtime. This issue is fixed in version 0.3.10. As a workaround, ensure the lock name is a non-empty string.

SeverityMedium
CVSS5.3
Exploit probability—
ProductVyper
PublishedSep 18, 2023
First seenSep 18, 2023
Weakness typeCWE-833CWE-833

How to fix

Update
  • vyperlang vyper0.3.10 or later
  • vyper0.3.10 or later

Affected products

ProductAffected versionsFixed in
vyperlang vyper0.2.9 ≤ v < 0.3.100.3.10
vyperPyPI0.2.9 ≤ v < 0.3.100.3.10

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