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GHSA-2FCV-QWW3-9V6H

Vulnerability from github – Published: 2025-11-24 23:32 – Updated: 2025-11-27 08:41
VLAI
Summary
Babylon's malformed vote extensions are not rejected
Details

Summary

Adversarial validators can send large vote extensions by using non-existing protobuf tags. This will result in the rejection of the subsequent block proposal. Eventually, all block proposals will be rejected by all validators.

Impact

A small group of adversarial validators can cause a chain halt.

Severity
7.0 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/babylonlabs-io/babylon/v4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-11-24T23:32:11Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\n\nAdversarial validators can send large vote extensions by using non-existing protobuf tags. This will result in the rejection of the subsequent block proposal. Eventually, all block proposals will be rejected by all validators.\n\n### Impact\n\nA small group of adversarial validators can cause a chain halt.",
  "id": "GHSA-2fcv-qww3-9v6h",
  "modified": "2025-11-27T08:41:47Z",
  "published": "2025-11-24T23:32:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/babylonlabs-io/babylon/security/advisories/GHSA-2fcv-qww3-9v6h"
    },
    {
      "type": "WEB",
      "url": "https://github.com/babylonlabs-io/babylon/pull/1873/commits/86f38abd2dca5a656195a9954bb569a08d662e2b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/babylonlabs-io/babylon"
    },
    {
      "type": "WEB",
      "url": "https://github.com/babylonlabs-io/babylon/releases/tag/v4.1.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Babylon\u0027s malformed vote extensions are not rejected"
}



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