Vulnerabilities in pkg:pypi/vyper

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2r3x-4mrv-mcxf",
  "modified" : "2026-10-06T15:22:29Z",
  "published" : "2026-10-06T15:22:29Z",
  "aliases" : [ ],
  "summary" : "Vyper: Memory corruption using function calls within tuples / nested calls",
  "details" : "### Impact\nWhen performing a function call inside a tuple or as an argument inside another function call, there is a memory corruption issue that occurs because of an incorrect pointer to the the tip of the stack.\n\nExample code:\n```python\n@internal\ndef _foo(a: uint256, b: uint256, c: uint256) -> (uint256, uint256, uint256, uint256, uint256):\n    return 1, a, b, c, 5\n\n@internal\ndef _foo2() -> uint256:\n    a: uint256[10] = [6,7,8,9,10,11,12,13,15,16]\n    return 4\n\n@external\ndef foo() -> (uint256, uint256, uint256, uint256, uint256):\n    return self._foo(2, 3, self._foo2())\n```\n\nPlease see #2186 for further information\n\n### Patches\nThis problem was fixed in #2186, and released as a part of [`v0.2.6`](https://github.com/vyperlang/vyper/releases/tag/v0.2.6).",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "vyper"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.2.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vyperlang/vyper/security/advisories/GHSA-2r3x-4mrv-mcxf"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vyperlang/vyper/pull/2186"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vyperlang/vyper/commit/74ba67d4bec5f8be4f05759e37d2bfb1463e0441"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vyperlang/vyper"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vyperlang/vyper/releases/tag/v0.2.6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-129" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-06T15:22:29Z",
    "nvd_published_at" : null
  }
}