Security exception in org.htmlunit.cyberneko.HTMLTagBalancer.reopenFormattingElements

{
  "id": "0f0d1bcf4d2536de7d32c5df5e969aa4b109ec955c43475f4e28ea59cad8b89d",
  "url": "https://osv.dev/vulnerability/OSV-2025-1097",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Security exception in org.htmlunit.cyberneko.HTMLTagBalancer.reopenFormattingElements",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=571721880 ``` Crash type: Security exception Crash state: org.htmlunit.cyberneko.HTMLTagBalancer.reopenFormattingElements org.htmlunit.cyberneko.HTMLTagBalancer.startElement org.htmlunit.cyberneko.HTMLTagBalancer.forceStartElement ```",
    "evidence": "osv:OSV-2025-1097",
    "products": [
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          "value": "htmlunit",
          "evidence": "/affected/0/package/name"
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        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "4.19.0",
            "evidence": "/affected/0/versions"
          },
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            "value": "4.20.0",
            "evidence": "/affected/0/versions"
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          {
            "value": "4.21.0",
            "evidence": "/affected/0/versions"
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            "value": "5.0.0",
            "evidence": "/affected/0/versions"
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            "value": "5.1.0",
            "evidence": "/affected/0/versions"
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            "value": "5.2.0",
            "evidence": "/affected/0/versions"
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            "value": "5.3.0",
            "evidence": "/affected/0/versions"
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            "evidence": "/affected/0/versions"
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            "value": "5.5.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "5.6.0",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2025-1097",
      "aliases": [
        "OSV-2025-1097"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/HtmlUnit/htmlunit.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0747862ca9e647fcdb16b35c9f775eaa577f9aee"
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          "package": {
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            "purl": "pkg:generic/htmlunit",
            "ecosystem": "OSS-Fuzz"
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          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/htmlunit/OSV-2025-1097.yaml",
            "introduced_range": "69f12908fca8b940fa6cd114b0266b909fca0c1a:b750ca63a80698eddef3fc3457911bc21a825b58"
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          "ecosystem_specific": {
            "severity": "LOW"
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      ],
      "modified": "2026-10-22T12:15:03.538392636Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=571721880"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 405470,
  "published_at": "2026-10-10T00:18:42.710584+00:00"
}