WID-SEC-W-2026-2037

Vulnerability from csaf_certbund - Published: 2026-06-22 22:00 - Updated: 2026-08-31 22:00
Summary
libxml2: Schwachstelle ermöglicht Denial of Service
Severity
Mittel
Notes
Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.
Produktbeschreibung: libxml ist ein C Parser und Toolkit, welches für das Gnome Projekt entwickelt wurde.
Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libxml2 ausnutzen, um einen Denial of Service Angriff durchzuführen.
Betroffene Betriebssysteme: - Linux - UNIX - Windows
CVE-2026-6653
Affected products
Product Identifier Version Remediation
RESF Rocky Linux
RESF
 cpe:/o:resf:rocky_linux:- —
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
Open Source libxml2 <2.11.0
Open Source / libxml2
 <2.11.0
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "libxml ist ein C Parser und Toolkit, welches f\u00fcr das Gnome Projekt entwickelt wurde.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in libxml2 ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-2037 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2037.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2037 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2037"
      },
      {
        "category": "external",
        "summary": "GitHub Advisory Database vom 2026-06-22",
        "url": "https://github.com/advisories/GHSA-V4QW-P44R-QHFG"
      },
      {
        "category": "external",
        "summary": "EU Vulnerability Database vom 2026-06-22",
        "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-38232"
      },
      {
        "category": "external",
        "summary": "Launchpad Advisory mit PoC",
        "url": "https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2026-3785 vom 2026-07-08",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3785.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:61247 vom 2026-08-31",
        "url": "https://access.redhat.com/errata/RHSA-2026:61247"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:61247 vom 2026-08-31",
        "url": "https://errata.build.resf.org/RLSA-2026:61247"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:61783 vom 2026-09-01",
        "url": "https://access.redhat.com/errata/RHSA-2026:61783"
      }
    ],
    "source_lang": "en-US",
    "title": "libxml2: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2026-08-31T22:00:00.000+00:00",
      "generator": {
        "date": "2026-09-01T10:54:44.319+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2037",
      "initial_release_date": "2026-06-22T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-06-22T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-07-07T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Amazon aufgenommen"
        },
        {
          "date": "2026-08-30T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2026-08-31T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation und Red Hat aufgenommen"
        }
      ],
      "status": "final",
      "version": "4"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003e=2.9.11",
                "product": {
                  "name": "Open Source libxml2 \u003e=2.9.11",
                  "product_id": "T055677"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003e=2.9.11",
                "product": {
                  "name": "Open Source libxml2 \u003e=2.9.11",
                  "product_id": "T055677-fixed"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c2.11.0",
                "product": {
                  "name": "Open Source libxml2 \u003c2.11.0",
                  "product_id": "T055678"
                }
              },
              {
                "category": "product_version",
                "name": "2.11.0",
                "product": {
                  "name": "Open Source libxml2 2.11.0",
                  "product_id": "T055678-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:xmlsoft:libxml2:2.11.0"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "libxml2"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "RESF Rocky Linux",
            "product": {
              "name": "RESF Rocky Linux",
              "product_id": "T054581",
              "product_identification_helper": {
                "cpe": "cpe:/o:resf:rocky_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "RESF"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-6653",
      "product_status": {
        "known_affected": [
          "T054581",
          "67646",
          "398363",
          "T055678"
        ]
      },
      "release_date": "2026-06-22T22:00:00.000+00:00",
      "title": "CVE-2026-6653"
    }
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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