hsec-2023-0008

{
  "affected": [
    {
      "database_specific": {
        "human_link": "https://github.com/haskell/security-advisories/tree/main/advisories/published/2023/HSEC-2023-0008.md",
        "osv": "https://raw.githubusercontent.com/haskell/security-advisories/refs/heads/generated/osv-export/2023/HSEC-2023-0008.json",
        "source": "https://github.com/haskell/security-advisories/blob/generated/osv-export/2023/HSEC-2023-0008.json"
      },
      "package": {
        "ecosystem": "Hackage",
        "name": "hledger-web",
        "purl": "pkg:hackage/hledger-web"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.24"
            },
            {
              "fixed": "1.23"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "type": "CVSS_V3"
        }
      ],
      "versions": [
        "0.24",
        "0.24.1",
        "0.25",
        "0.25.1",
        "0.26",
        "0.27",
        "1.0",
        "1.0.1",
        "1.1",
        "1.10",
        "1.11",
        "1.11.1",
        "1.12",
        "1.13",
        "1.14",
        "1.14.1",
        "1.15",
        "1.16",
        "1.16.1",
        "1.16.2",
        "1.17",
        "1.17.1",
        "1.18",
        "1.18.1",
        "1.19",
        "1.19.1",
        "1.2",
        "1.20",
        "1.20.1",
        "1.20.2",
        "1.20.3",
        "1.20.4",
        "1.21",
        "1.22",
        "1.22.1",
        "1.22.2",
        "1.3",
        "1.3.1",
        "1.3.2",
        "1.4",
        "1.5",
        "1.5.1",
        "1.9",
        "1.9.1",
        "1.9.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2021-46888"
  ],
  "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": "# Stored XSS in *hledger-web*\n\nAn issue was discovered in *hledger-web* < 1.23. A Stored Cross-Site\nScripting (XSS) vulnerability exists in `toBloodhoundJson` that\nallows an attacker to execute JavaScript by encoding user-controlled\nvalues in a payload with base64 and parsing them with the `atob`\nfunction.\n\n*hledger-web* forms sanitise obvious JavaScript, but not obfuscated\nJavaScript (see [OWASP Filter Evasion Cheat Sheet][cheatsheet]).\nThis means *hledger-web* instances, especially anonymously-writable\nones like `demo.hledger.org`, could be loaded with malicious\nJavaScript to be executed by subsequent visitors.\n\n[cheatsheet]: https://owasp.org/www-community/xss-filter-evasion-cheatsheet\n\nReported by Gaspard Baye and Hamidullah Muslih.  Fix by Arsen\nArsenović.\n",
  "id": "HSEC-2023-0008",
  "modified": "2025-11-14T18:15:37.223382Z",
  "published": "2025-11-14T14:45:34Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://github.com/simonmichael/hledger/issues/1525"
    },
    {
      "type": "INTRODUCED",
      "url": "https://github.com/simonmichael/hledger/commit/ec51d28839b2910eea360b1b8c72904b51cf7821"
    },
    {
      "type": "EVIDENCE",
      "url": "https://www.youtube.com/watch?v=QnRO-VkfIic"
    },
    {
      "type": "FIX",
      "url": "https://github.com/simonmichael/hledger/pull/1663"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Stored XSS in hledger-web"
}