Description
Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. Versions of vyper prior to 0.3.2 suffer from a potential buffer overrun. Importing a function from a JSON interface which returns `bytes` generates bytecode which does not clamp bytes length, potentially resulting in a buffer overrun. Users are advised to upgrade. There are no known workarounds for this issue.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_confirm
https://github.com/vyperlang/vyper/security/advisories/GHSA-4mrx-6fxm-8jpg
Patch, Third Party Advisory x_refsource_misc
https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b
Scores
CVSS v3
7.1
EPSS
0.0033
EPSS Percentile
55.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-120
Status
published
Products (2)
pypi/vyper
0 - 0.3.2PyPI
vyperlang/vyper
< 0.3.2
Published
Apr 13, 2022
Tracked Since
Feb 18, 2026