GHSA-QG4C-8PJ4-QGW2

Vulnerability from github – Published: 2025-06-16 18:32 – Updated: 2025-11-22 03:31
VLAI?
Details

A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.

Severity ?
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2025-49794"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-825"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-16T16:15:18Z",
    "severity": "CRITICAL"
  },
  "details": "A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the \u003csch:name path=\"...\"/\u003e schema elements. This flaw allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the program\u0027s crash using libxml or other possible undefined behaviors.",
  "id": "GHSA-qg4c-8pj4-qgw2",
  "modified": "2025-11-22T03:31:17Z",
  "published": "2025-06-16T18:32:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49794"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2372373"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2025-49794"
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    {
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      "url": "https://access.redhat.com/errata/RHSA-2025:21913"
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    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2025:19894"
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    {
      "type": "WEB",
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    {
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      "url": "https://access.redhat.com/errata/RHSA-2025:19041"
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      "url": "https://access.redhat.com/errata/RHSA-2025:15397"
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      "url": "https://access.redhat.com/errata/RHSA-2025:12237"
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      "url": "https://access.redhat.com/errata/RHSA-2025:12199"
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      "url": "https://access.redhat.com/errata/RHSA-2025:10698"
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    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2025:10630"
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  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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