WID-SEC-W-2026-3195

Vulnerability from csaf_certbund - Published: 2026-09-06 22:00 - Updated: 2026-09-28 22:00
Summary
libxml2: Mehrere Schwachstellen
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 Angreifer kann mehrere Schwachstellen in libxml2 ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Daten zu manipulieren oder offenzulegen und um einen Denial of Service herbeizuführen.
Betroffene Betriebssysteme: - Linux - UNIX - Windows
CVE-2026-86137
Affected products
Product Identifier Version Remediation
Oracle Linux
Oracle
 cpe:/o:oracle:linux:- —
RESF Rocky Linux
RESF
 cpe:/o:resf:rocky_linux:- —
Red Hat Enterprise Linux
Red Hat
 cpe:/o:redhat:enterprise_linux:- —
Open Source libxml2 <2.15.4
Open Source / libxml2
 <2.15.4
Ubuntu Linux
Ubuntu
 cpe:/o:canonical:ubuntu_linux:- —
Amazon Linux 2
Amazon
 cpe:/o:amazon:linux_2:- —
CVE-2026-86138
Affected products
Known affected 6 products, the same list as for CVE-2026-86137
CVE-2026-86139
Affected products
Known affected 6 products, the same list as for CVE-2026-86137
CVE-2026-86140
Affected products
Known affected 6 products, the same list as for CVE-2026-86137
CVE-2026-86141
Affected products
Known affected 6 products, the same list as for CVE-2026-86137
CVE-2026-86142
Affected products
Known affected 6 products, the same list as for CVE-2026-86137
CVE-2026-86143
Affected products
Known affected 6 products, the same list as for CVE-2026-86137
CVE-2026-86144
Affected products
Known affected 6 products, the same list as for CVE-2026-86137
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 Angreifer kann mehrere Schwachstellen in libxml2 ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Daten zu manipulieren oder offenzulegen und um einen Denial of Service herbeizuf\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-2026-3195 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3195.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-3195 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3195"
      },
      {
        "category": "external",
        "summary": "Vulnerabilities fixed in libxml2-2.15.4 vom 2026-09-06",
        "url": "https://seclists.org/oss-sec/2026/q3/657"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-8787-1 vom 2026-09-21",
        "url": "https://ubuntu.com/security/notices/USN-8787-1"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:71586 vom 2026-09-24",
        "url": "https://access.redhat.com/errata/RHSA-2026:71586"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:71641 vom 2026-09-24",
        "url": "https://access.redhat.com/errata/RHSA-2026:71641"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:71585 vom 2026-09-24",
        "url": "https://access.redhat.com/errata/RHSA-2026:71585"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:71641 vom 2026-09-26",
        "url": "https://errata.build.resf.org/RLSA-2026:71641"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:71585 vom 2026-09-25",
        "url": "https://errata.build.resf.org/RLSA-2026:71585"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-71641 vom 2026-09-26",
        "url": "https://linux.oracle.com/errata/ELSA-2026-71641.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-71586 vom 2026-09-25",
        "url": "https://linux.oracle.com/errata/ELSA-2026-71586.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-71585 vom 2026-09-25",
        "url": "https://linux.oracle.com/errata/ELSA-2026-71585.html"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:71586 vom 2026-09-25",
        "url": "https://errata.build.resf.org/RLSA-2026:71586"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2026-3940 vom 2026-09-29",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3940.html"
      }
    ],
    "source_lang": "en-US",
    "title": "libxml2: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-09-28T22:00:00.000+00:00",
      "generator": {
        "date": "2026-09-29T08:49:44.691+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-3195",
      "initial_release_date": "2026-09-06T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-09-06T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-09-21T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Ubuntu aufgenommen"
        },
        {
          "date": "2026-09-24T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Red Hat aufgenommen"
        },
        {
          "date": "2026-09-27T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation und Oracle Linux aufgenommen"
        },
        {
          "date": "2026-09-28T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von Amazon aufgenommen"
        }
      ],
      "status": "final",
      "version": "5"
    }
  },
  "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": "\u003c2.15.4",
                "product": {
                  "name": "Open Source libxml2 \u003c2.15.4",
                  "product_id": "T059073"
                }
              },
              {
                "category": "product_version",
                "name": "2.15.4",
                "product": {
                  "name": "Open Source libxml2 2.15.4",
                  "product_id": "T059073-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:xmlsoft:libxml2:2.15.4"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "libxml2"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Oracle Linux",
            "product": {
              "name": "Oracle Linux",
              "product_id": "T056236",
              "product_identification_helper": {
                "cpe": "cpe:/o:oracle:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Oracle"
      },
      {
        "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"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T055947",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-86137",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86137"
    },
    {
      "cve": "CVE-2026-86138",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86138"
    },
    {
      "cve": "CVE-2026-86139",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86139"
    },
    {
      "cve": "CVE-2026-86140",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86140"
    },
    {
      "cve": "CVE-2026-86141",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86141"
    },
    {
      "cve": "CVE-2026-86142",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86142"
    },
    {
      "cve": "CVE-2026-86143",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86143"
    },
    {
      "cve": "CVE-2026-86144",
      "product_status": {
        "known_affected": [
          "T056236",
          "T054581",
          "67646",
          "T059073",
          "T055947",
          "398363"
        ]
      },
      "release_date": "2026-09-06T22:00:00.000+00:00",
      "title": "CVE-2026-86144"
    }
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.