CVE-2023-42460
MEDIUMvyper 0.3.4-0.3.9 - Incorrect Calculation in _abi_decode()
Title source: llmDescription
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.
References (2)
Core 2
Core References
Exploit, Patch, Third Party Advisory x_refsource_confirm
https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97
Patch x_refsource_misc
https://github.com/vyperlang/vyper/pull/3626
Scores
CVSS v3
5.3
EPSS
0.0055
EPSS Percentile
41.6%
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