GHSA-mcvf-2q2m-x72m
Vulnerability from github
Published
2022-12-13 17:45
Modified
2025-11-04 16:41
Severity ?
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Improper neutralization of data URIs may allow XSS in rails-html-sanitizer
Details

Summary

rails-html-sanitizer >= 1.0.3, < 1.4.4 is vulnerable to cross-site scripting via data URIs when used in combination with Loofah >= 2.1.0.

Mitigation

Upgrade to rails-html-sanitizer >= 1.4.4.

Severity

The maintainers have evaluated this as Medium Severity 6.1.

References

Credit

This vulnerability was independently reported by Maciej Piechota (@haqpl) and Mrinmoy Das (@goromlagche).

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rails-html-sanitizer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.3"
            },
            {
              "fixed": "1.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-23518"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-12-13T17:45:39Z",
    "nvd_published_at": "2022-12-14T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nrails-html-sanitizer `\u003e= 1.0.3, \u003c 1.4.4` is vulnerable to cross-site scripting via data URIs when used in combination with Loofah `\u003e= 2.1.0`.\n\n\n## Mitigation\n\nUpgrade to rails-html-sanitizer `\u003e= 1.4.4`.\n\n\n## Severity\n\nThe maintainers have evaluated this as [Medium Severity 6.1](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).\n\n\n## References\n\n- [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) (4.9)](https://cwe.mitre.org/data/definitions/79.html)\n- [SVG MIME Type (image/svg+xml) is misleading to developers \u00b7 Issue #266 \u00b7 w3c/svgwg](https://github.com/w3c/svgwg/issues/266)\n- https://github.com/rails/rails-html-sanitizer/issues/135\n- https://hackerone.com/reports/1694173\n\n\n## Credit\n\nThis vulnerability was independently reported by Maciej Piechota (@haqpl) and Mrinmoy Das (@goromlagche).",
  "id": "GHSA-mcvf-2q2m-x72m",
  "modified": "2025-11-04T16:41:46Z",
  "published": "2022-12-13T17:45:39Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-mcvf-2q2m-x72m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23518"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails-html-sanitizer/issues/135"
    },
    {
      "type": "WEB",
      "url": "https://github.com/w3c/svgwg/issues/266"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1694173"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rails/rails-html-sanitizer"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rails-html-sanitizer/CVE-2022-23518.yml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/09/msg00045.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper neutralization of data URIs may allow XSS in rails-html-sanitizer"
}


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