Libxml: null pointer dereference leads to denial of service (dos)

{
  "id": "54b3446b00dfd5bf723043d0fe8b7b9fc8155b30d5a56e7f95c7f517be685339",
  "url": "https://osv.dev/vulnerability/CVE-2025-49795",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Libxml: null pointer dereference leads to denial of service (dos)",
    "summary": "A NULL pointer dereference vulnerability was found in libxml2 when processing XPath XML expressions. This flaw allows an attacker to craft a malicious XML input to libxml2, leading to a denial of service.",
    "evidence": "osv:CVE-2025-49795",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-49795",
      "aliases": [
        "CVE-2025-49795"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.gnome.org/gnome/libxml2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ae383bdb74523ddaf831d7db0690173c25e483b3"
                },
                {
                  "fixed": "74f3154320df8950eceae4951975cc9dfc3a254d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.10.0"
                      },
                      {
                        "fixed": "2.14.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.14.4",
            "v2.14.3",
            "v2.14.2",
            "v2.14.1",
            "v2.14.0",
            "v2.13.0",
            "v2.12.0",
            "v2.11.0",
            "v2.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-49795.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.387732170Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/downloads/content/package-browser/",
        "https://catalog.redhat.com/software/containers/",
        "https://cert-portal.siemens.com/productcert/html/ssa-253495.html",
        "https://access.redhat.com/errata/RHSA-2025:10630",
        "https://access.redhat.com/errata/RHSA-2025:19020",
        "https://access.redhat.com/errata/RHSA-2026:7519",
        "https://access.redhat.com/security/cve/CVE-2025-49795",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49795.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-49795",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2372379",
        "https://gitlab.gnome.org/GNOME/libxml2/-/issues/932",
        "https://gitlab.gnome.org/GNOME/libxml2/"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-825"
        ],
        "cna_assigner": "redhat",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "0:2.12.5-7.el10_0"
                  },
                  {
                    "fixed": "2.15.2-0.3.hum1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "InverseAffectedRanges"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49795.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-49795",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497102,
  "published_at": "2025-06-16T15:19:29.871+00:00"
}