{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/babylonlabs-io/babylon/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-754"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-07-08T19:09:11Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\n\nSending a message that modifies the validator set at the epoch boundary halts the chain.\n\n### Impact\n\nDenial of Service - Comos-sdk prevents modifying the validator set from two different modules - https://github.com/cosmos/cosmos-sdk/blob/release/v0.50.x/types/module/module.go#L811. Such an operation leads to panic and chain halt.\n\n### Detailed Post mortem\n\nhttps://boiling-lake-106.notion.site/2025-06-18-Genesis-mainnet-chain-halt-post-mortem-229f60cc1b5f80b7adf5e3ea0541ea87",
  "id": "GHSA-rj53-j6jw-7f7g",
  "modified": "2025-07-08T19:09:11Z",
  "published": "2025-07-08T19:09:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/babylonlabs-io/babylon/security/advisories/GHSA-rj53-j6jw-7f7g"
    },
    {
      "type": "WEB",
      "url": "https://github.com/babylonlabs-io/babylon/pull/1244/files"
    },
    {
      "type": "WEB",
      "url": "https://boiling-lake-106.notion.site/2025-06-18-Babylon-Genesis-Chain-Halt-Post-Mortem-229f60cc1b5f80b7adf5e3ea0541ea87"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/babylonlabs-io/babylon"
    },
    {
      "type": "WEB",
      "url": "https://github.com/babylonlabs-io/babylon/releases/tag/v2.1.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Babylon vulnerable to chain halt when a message modifies the validator set at the epoch boundary"
}