{
  "schema_version": "1.7.0",
  "id": "RHSA-2026:72663",
  "related": [],
  "upstream": [
    "CVE-2026-66046",
    "CVE-2026-93990"
  ],
  "published": "2026-09-30T10:17:41Z",
  "modified": "2026-09-30T10:17:41Z",
  "summary": "Red Hat Security Advisory: expat security update",
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    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
    }
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    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:72663"
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    {
      "type": "ARTICLE",
      "url": "https://access.redhat.com/security/updates/classification/#important"
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      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517901"
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    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2538967"
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    {
      "type": "ADVISORY",
      "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_72663.json"
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    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-66046"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-66046"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66046"
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    {
      "type": "ARTICLE",
      "url": "https://github.com/libexpat/libexpat/pull/1321"
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    {
      "type": "ARTICLE",
      "url": "https://www.vulncheck.com/advisories/expat-denial-of-service-via-storeatts-quadratic-complexity"
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    {
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      "url": "https://access.redhat.com/security/cve/CVE-2026-93990"
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    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93990"
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    {
      "type": "ARTICLE",
      "url": "https://github.com/libexpat/libexpat"
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    {
      "type": "ARTICLE",
      "url": "https://github.com/libexpat/libexpat/commit/ff6e1d7e750bbe245178f51a47a965dc8342861a"
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    {
      "type": "ARTICLE",
      "url": "https://github.com/libexpat/libexpat/pull/1282"
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    {
      "type": "ARTICLE",
      "url": "https://www.vulncheck.com/advisories/expat-through-2.8.4-malformed-utf-16-acceptance-via-unchecked-surrogate"
    }
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}