ruby-rails-html-sanitizer — security advisory

{
  "id": "2e66342df1fa92c046e9b3b7b5e218e137b0300974a75e07103c0f6880a4231b",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-73648",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-73648",
    "summary": "rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. From 1.0.3 until 1.7.1, Rails::HTML::PermitScrubber restricted SVG reference elements in SVG_ALLOW_LOCAL_HREF only when they used xlink:href, even though browsers also accept the plain href attribute. Applications with non-default allowed tags that included SVG use or feImage elements could therefore permit external references; a same-origin external SVG referenced by use could execute scripts in the sanitized document's context, while feImage could load external images for tracking. Applications using the default allowed tags are not affected. This issue is fixed in version 1.7.1.",
    "evidence": "osv:DEBIAN-CVE-2026-73648",
    "products": [
      {
        "name": {
          "value": "ruby-rails-html-sanitizer",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.4.4-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.6.2-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.6.2-1~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.7.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.7.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.7.1-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "ruby-rails-html-sanitizer",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.6.2-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.7.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.7.0-2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.7.1-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "ruby-rails-html-sanitizer",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.7.1-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.6.2-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.7.0-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.7.0-2",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-73648",
      "aliases": [
        "DEBIAN-CVE-2026-73648"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "ruby-rails-html-sanitizer",
            "purl": "pkg:deb/debian/ruby-rails-html-sanitizer?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "1.4.4-1",
            "1.6.2-1",
            "1.6.2-1~exp1",
            "1.7.0-1",
            "1.7.0-2",
            "1.7.1-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73648.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "ruby-rails-html-sanitizer",
            "purl": "pkg:deb/debian/ruby-rails-html-sanitizer?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "1.6.2-1",
            "1.7.0-1",
            "1.7.0-2",
            "1.7.1-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73648.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.7.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "ruby-rails-html-sanitizer",
            "purl": "pkg:deb/debian/ruby-rails-html-sanitizer?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "1.6.2-1",
            "1.7.0-1",
            "1.7.0-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-73648.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-25T09:47:32.729386065Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-73648"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-73648"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-73648",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 445268,
  "published_at": "2026-08-13T18:18:20.62+00:00"
}