Security advisory

{
  "id": "918d1a03fec5775579036329362e8e0fdb85e3ee572ec67c6b5d3f9fbf29d50f",
  "url": "https://osv.dev/vulnerability/CVE-2021-23980",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-23980",
    "summary": "A mutation XSS affects users calling bleach.clean with all of: svg or math in the allowed tags p or br in allowed tags style, title, noscript, script, textarea, noframes, iframe, or xmp in allowed tags the keyword argument strip_comments=False Note: none of the above tags are in the default allowed tags and strip_comments defaults to True.",
    "evidence": "osv:CVE-2021-23980",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-23980",
      "aliases": [
        "CVE-2021-23980",
        "GHSA-vv2x-vrpj-qqpq",
        "PYSEC-2021-865"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mozilla/bleach",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "79b7a3c5e56a09d1d323a5006afa59b56162eb13"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mozilla:bleach:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.3.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.2.3",
            "v3.2.2",
            "v3.2.1",
            "v3.2.0",
            "v3.1.5",
            "v3.1.4",
            "v3.1.3",
            "v3.1.0",
            "v3.0.2",
            "v3.0.1",
            "v3.0.0",
            "v2.1.4",
            "v2.1.3",
            "v2.1.2",
            "v2.1.1",
            "v2.1",
            "v2.0",
            "v1.5",
            "v1.4.2",
            "v1.4.1",
            "v1.4",
            "v1.2.2",
            "v1.2.1",
            "v1.1.1",
            "v1.1.0",
            "v1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "1.0.0rc2",
            "0.5.0",
            "1.0.0rc",
            "0.4.0",
            "0.3.5",
            "0.3.4",
            "0.3.3",
            "0.3.2",
            "0.3.1",
            "0.3.0",
            "0.2.2",
            "0.2.1",
            "0.2.0",
            "0.1.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23980.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:32.586930689Z",
      "provider": "osv",
      "references": [
        "https://github.com/mozilla/bleach/security/advisories/GHSA-vv2x-vrpj-qqpq",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=CVE-2021-23980"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-23980",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385533,
  "published_at": "2023-02-16T22:15:10.713+00:00"
}