id: PYSEC-2023-191
modified: 2023-10-04T20:26:42.494872Z
published: 2023-09-27T15:19:00Z
aliases:
- CVE-2023-42460
- GHSA-cx2q-hfxr-rj97
details: '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.'
affected:
- package:
    ecosystem: PyPI
    name: vyper
    purl: pkg:pypi/vyper
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: 0.3.4
    - fixed: 0.3.10
  versions:
  - 0.3.10rc1
  - 0.3.10rc2
  - 0.3.10rc3
  - 0.3.10rc4
  - 0.3.10rc5
  - 0.3.4
  - 0.3.5
  - 0.3.6
  - 0.3.7
  - 0.3.8
  - 0.3.9
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
references:
- type: EVIDENCE
  url: https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97
- type: FIX
  url: https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97
- type: ADVISORY
  url: https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97
- type: FIX
  url: https://github.com/vyperlang/vyper/pull/3626