Advisory Database
  • Advisories
  • Dependency Scanning
  1. pypi
  2. ›
  3. vyper
  4. ›
  5. GHSA-4v7v-gqf9-ww2g

GHSA-4v7v-gqf9-ww2g: Vyper: Call stack corruption when passing complex type containing non-base type members as argument

October 6, 2026

When we pass a multi-dimensional array (like [[1, 2], [3, 4]]) as an argument to internal/external functions we get incorrect output. This is due to a stack management issue, because it was assumed that the size of each subtype of an array/struct is 32, which is not always correct.

Example code:

@internal
def test_input(arr: int128[2][1], i: int128) -> (int128[2][1], int128):
return arr, i

@external
def test_values(arr: int128[2][1], i: int128) -> (int128[2][1], int128):
return self.test_input(arr, i)

Please see #2183 for further information

References

  • github.com/advisories/GHSA-4v7v-gqf9-ww2g
  • github.com/vyperlang/vyper/commit/0be02b7331e8febe79d5a4218829c72e30417a29
  • github.com/vyperlang/vyper/issues/2183
  • github.com/vyperlang/vyper/pull/2184
  • github.com/vyperlang/vyper/releases/tag/v0.2.6
  • github.com/vyperlang/vyper/security/advisories/GHSA-4v7v-gqf9-ww2g

Code Behaviors & Features

Detect and mitigate GHSA-4v7v-gqf9-ww2g with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 0.2.6

Fixed versions

  • 0.2.6

Solution

Upgrade to version 0.2.6 or above.

Impact 5.3 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-682: Incorrect Calculation

Source file

pypi/vyper/GHSA-4v7v-gqf9-ww2g.yml

Spotted a mistake? Edit the file on GitLab.

  • Site Repo
  • About GitLab
  • Terms
  • Privacy Statement
  • Contact

Page generated Wed, 07 Oct 2026 12:19:11 +0000.