hsec-2023-0002

{
  "affected": [
    {
      "database_specific": {
        "human_link": "https://github.com/haskell/security-advisories/tree/main/advisories/published/2023/HSEC-2023-0002.md",
        "osv": "https://raw.githubusercontent.com/haskell/security-advisories/refs/heads/generated/osv-export/2023/HSEC-2023-0002.json",
        "source": "https://github.com/haskell/security-advisories/blob/generated/osv-export/2023/HSEC-2023-0002.json"
      },
      "package": {
        "ecosystem": "Hackage",
        "name": "biscuit-haskell",
        "purl": "pkg:hackage/biscuit-haskell"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.1.0.0"
            },
            {
              "fixed": "0.2.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "type": "CVSS_V3"
        }
      ],
      "versions": [
        "0.1.0.0",
        "0.1.1.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2022-31053",
    "GHSA-75rw-34q6-72cr",
    "GO-2022-0564"
  ],
  "database_specific": {
    "home": "https://github.com/haskell/security-advisories",
    "osvs": "https://raw.githubusercontent.com/haskell/security-advisories/refs/heads/generated/osv-export",
    "repository": "https://github.com/haskell/security-advisories"
  },
  "details": "# Improper Verification of Cryptographic Signature\n\nThe Biscuit specification version 1 contains a vulnerable algorithm that allows\nmalicious actors to forge valid Γ-signatures. Such an attack would allow an\nattacker to create a token with any access level. The version 2 of the\nspecification mandates a different algorithm than gamma signatures and as such\nis not affected by this vulnerability.\n",
  "id": "HSEC-2023-0002",
  "modified": "2026-02-04T03:12:24.911090Z",
  "published": "2025-11-14T14:45:34Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://eprint.iacr.org/2020/1484"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/biscuit-auth/biscuit/security/advisories/GHSA-75rw-34q6-72cr"
    }
  ],
  "related": [
    "GHSA-75rw-34q6-72cr"
  ],
  "schema_version": "1.7.5",
  "summary": "Improper Verification of Cryptographic Signature"
}