Description
Vyper is a Pythonic Smart Contract Language for the EVM. The `_abi_decode()` function does not validate input when it is nested in an expression. Uses of `_abi_decode()` can be constructed which allow for bounds checking to be bypassed resulting in incorrect results. This issue has not yet been fixed, but a fix is expected in release `0.3.10`. Users are advised to reference pull request #3626.
Scores
CVSS v3
5.3
EPSS
0.0005
EPSS Percentile
14.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-682
Status
published
Products (2)
pypi/vyper
0.3.4 - 0.3.10PyPI
vyperlang/vyper
0.3.4 - 0.3.10
Published
Sep 27, 2023
Tracked Since
Feb 18, 2026