Description
Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. Prior to version 0.3.0, default functions don't respect nonreentrancy keys and the lock isn't emitted. No vulnerable production contracts were found. Additionally, using a lock on a `default` function is a very sparsely used pattern. As such, the impact is low. Version 0.3.0 contains a patch for the issue.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/vyperlang/vyper/security/advisories/GHSA-m2v9-w374-5hj9
Issue Tracking x_refsource_misc
https://github.com/vyperlang/vyper/issues/2455
Scores
CVSS v3
5.3
EPSS
0.0026
EPSS Percentile
49.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-667
Status
published
Products (2)
pypi/vyper
0 - 0.3.0PyPI
vyperlang/vyper
< 0.3.0
Published
Apr 25, 2024
Tracked Since
Feb 18, 2026