{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0463ea4c304858d94494e2df229021448feaedeb"
            },
            {
              "fixed": "851f7a1b3aa2a36fd041e3d0ed38f9355a58c8ae"
            }
          ],
          "repo": "https://github.com/vyperlang/vyper",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w9g2-3w7p-72g9"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-670"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30629.json"
  },
  "details": "Vyper is a Pythonic Smart Contract Language for the ethereum virtual machine. In versions 0.3.1 through 0.3.7, the Vyper compiler generates the wrong bytecode. Any contract that uses the `raw_call` with `revert_on_failure=False` and `max_outsize=0` receives the wrong response from `raw_call`. Depending on the memory garbage, the result can be either `True` or `False`. A patch is available and, as of time of publication, anticipated to be part of Vyper 0.3.8. As a workaround, one may always put  `max_outsize\u003e0`.",
  "id": "CVE-2023-30629",
  "modified": "2026-04-01T23:10:41.325623541Z",
  "published": "2023-04-24T21:58:00.227Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://docs.vyperlang.org/en/v0.3.7/built-in-functions.html#raw_call"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lidofinance/gate-seals/blob/051593e74df01a4131c485b4fda52e691cd4b7d8/contracts/GateSeal.vy#L164"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lidofinance/gate-seals/pull/5/files"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/30xxx/CVE-2023-30629.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/vyperlang/vyper/security/advisories/GHSA-w9g2-3w7p-72g9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-30629"
    },
    {
      "type": "FIX",
      "url": "https://github.com/vyperlang/vyper/commit/851f7a1b3aa2a36fd041e3d0ed38f9355a58c8ae"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Vyper's raw_call with outsize=0 and revert_on_failure=False returns incorrect success value"
}