{
  "cveId": "CVE-2025-15646",
  "url": "https://patchblox.com/security/cve/CVE-2025-15646",
  "summary": "CVE-2025-15646 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2025-15646, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "libhtml-gumbo-perl: HTML::Gumbo versions before 0.19 for Perl disclose heap memory via type confusion",
  "description": "HTML::Gumbo versions before 0.19 for Perl disclose heap memory via type confusion.  Support for the \u003Ctemplate\u003E element was added to libgumbo 0.10.0 in 2015, but the walk_tree function in lib/HTML/Gumbo.xs was not updated to support it. The element was treated as a text-node, where strlen() over-reads the heap block that the pointer addresses.  Any caller that runs parse() with the default format =\u003E \u0027string\u0027, or with format =\u003E \u0027tree\u0027, on input containing a \u003Ctemplate\u003E element serializes the over-read bytes into the returned result, disclosing bounded heap contents. format =\u003E \u0027callback\u0027 reaches a croak on the unhandled node type and is unaffected.",
  "published": "2026-07-01T16:16:29Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00671,
  "epssPercentile": 0.523,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libhtml-gumbo-perl",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "0.18-3\u002Bdeb12u1",
      "fix": "DEBIAN-CVE-2025-15646",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-15646",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "libhtml-gumbo-perl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "0.18-5",
      "fix": "DEBIAN-CVE-2025-15646",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-15646",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "libhtml-gumbo-perl",
      "release": "Debian 14",
      "fixedVersion": "0.18-5",
      "fix": "DEBIAN-CVE-2025-15646",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2025-15646",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "perl-HTML-Gumbo",
      "release": "Fedora 43",
      "fixedVersion": "0.19-1.fc43",
      "fix": "FEDORA-2026-A457BF78B4",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a457bf78b4",
      "released": "2026-07-02T21:04:40Z"
    },
    {
      "platform": "linux",
      "product": "perl-HTML-Gumbo-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "0.19-1.fc43",
      "fix": "FEDORA-2026-A457BF78B4",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a457bf78b4",
      "released": "2026-07-02T21:04:40Z"
    },
    {
      "platform": "linux",
      "product": "perl-HTML-Gumbo-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "0.19-1.fc43",
      "fix": "FEDORA-2026-A457BF78B4",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-a457bf78b4",
      "released": "2026-07-02T21:04:40Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}