CVE-2023-42460

HIGH EPSS 42.0%
Published Sep 27, 20232y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Sep 27, 2023 2y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
42.0% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-682

Affected Products 1

VendorProductVersionRange
vyperlangvyper*≥0.3.4  –  <0.3.10

References 2

  • github.com https://github.com/vyperlang/vyper/pull/3626
    Patch
  • github.com https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97
    ExploitPatchThird Party Advisory

Remediation

  • github.com https://github.com/vyperlang/vyper/pull/3626
    Patch
  • github.com https://github.com/vyperlang/vyper/security/advisories/GHSA-cx2q-hfxr-rj97
    ExploitPatchThird Party Advisory