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Buffer overflow in Vyper

Type: advisorySources: OSV

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. Versions of vyper prior to 0.3.2 suffer from a potential buffer overrun. Importing a function from a JSON interface which returns `bytes` generates bytecode which does not clamp bytes length, potentially resulting in a buffer overrun. Users are advised to upgrade. There are no known workarounds for this issue.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2022-24788
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 15:31 UTC · Revision 1

Source evidence

Buffer overflow in Vyper

core-osv · Original source

Published 13 Apr 2022, 18:30 UTC

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. Versions of vyper prior to 0.3.2 suffer from a potential buffer overrun. Importing a function from a JSON interface which returns `bytes` generates bytecode which does not clamp bytes length, potentially resulting in a buffer overrun. Users are advised to upgrade. There are no known workarounds for this issue.

osv:CVE-2022-24788
Complete source record
{
  "id": "244f30422dc94ee70ee7b3715594470de58b90b9ed9b3787e83d341f83e1345f",
  "url": "https://osv.dev/vulnerability/CVE-2022-24788",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Buffer overflow in Vyper",
    "summary": "Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. Versions of vyper prior to 0.3.2 suffer from a potential buffer overrun. Importing a function from a JSON interface which returns `bytes` generates bytecode which does not clamp bytes length, potentially resulting in a buffer overrun. Users are advised to upgrade. There are no known workarounds for this issue.",
    "evidence": "osv:CVE-2022-24788",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2022-24788",
      "aliases": [
        "CVE-2022-24788",
        "GHSA-4mrx-6fxm-8jpg",
        "PYSEC-2022-197"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/vyperlang/vyper",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3b6a4117dcf1215d4cca19ca5a4c7d1ede6e4d44"
                },
                {
                  "fixed": "049dbdc647b2ce838fae7c188e6bb09cf16e470b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "049dbdc647b2ce838fae7c188e6bb09cf16e470b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.1",
            "v0.3.0",
            "v0.2.16",
            "v0.2.15",
            "v0.2.14",
            "v0.2.13",
            "v0.2.12",
            "v0.2.11",
            "v0.2.10",
            "v0.2.9",
            "v0.2.8",
            "v0.2.7",
            "v0.2.6",
            "v0.2.5",
            "v0.2.4",
            "v0.2.3",
            "v0.2.2",
            "v0.2.1",
            "0.2.1",
            "v0.2.0",
            "v0.1.0-beta.17",
            "v0.1.0-beta.16",
            "v0.1.0-beta.15",
            "v0.1.0-beta.14",
            "v0.1.0-beta.13",
            "v0.1.0-beta.12",
            "v0.1.0-beta.11",
            "v0.1.0-beta.10",
            "v0.1.0-beta.9",
            "v0.1.0-beta.8",
            "v0.1.0-beta.7",
            "v0.1.0-beta.6",
            "v0.1.0-beta.5",
            "v0.1.0-beta.3",
            "v0.1.0-beta.2",
            "v0.1.0-beta.1",
            "v0.0.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-24788.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.793490377Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24788.json",
        "https://github.com/vyperlang/vyper/security/advisories/GHSA-4mrx-6fxm-8jpg",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-24788",
        "https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-120"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/24xxx/CVE-2022-24788.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-24788",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504156,
  "published_at": "2022-04-13T18:30:18+00:00"
}