SUSE-SU-2026:0846-1

Vulnerability from csaf_suse - Published: 2026-03-06 17:04 - Updated: 2026-09-16 19:08
Summary
Security update for python-Markdown
Severity
Important
Notes
Title of the patch: Security update for python-Markdown
Description of the patch: This update for python-Markdown fixes the following issue: - CVE-2025-69534: incomplete markup declaration in raw HTML can crash applications that process untrusted Markdown (bsc#1259256).
Patchnames: SUSE-2026-846,openSUSE-SLE-15.6-2026-846
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2025-69534
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Leap 15.6:python311-Markdown-3.5.2-150600.3.3.1.noarch —
Vendor Fix
Threats
Impact important
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for python-Markdown",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for python-Markdown fixes the following issue:\n\n- CVE-2025-69534: incomplete markup declaration in raw HTML can crash applications that process untrusted Markdown\n  (bsc#1259256).\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-2026-846,openSUSE-SLE-15.6-2026-846",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_0846-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2026:0846-1",
        "url": "https://www.suse.com/support/update/announcement/2026/suse-su-20260846-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2026:0846-1",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024660.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1259256",
        "url": "https://bugzilla.suse.com/1259256"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2025-69534 page",
        "url": "https://www.suse.com/security/cve/CVE-2025-69534/"
      }
    ],
    "title": "Security update for python-Markdown",
    "tracking": {
      "current_release_date": "2026-09-16T19:08:34Z",
      "generator": {
        "date": "2026-03-06T17:04:39Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2026:0846-1",
      "initial_release_date": "2026-03-06T17:04:39Z",
      "revision_history": [
        {
          "date": "2026-03-06T17:04:39Z",
          "number": "1",
          "summary": "Current version"
        },
        {
          "date": "2026-09-16T18:21:46Z",
          "number": "2",
          "summary": "unknown changes"
        },
        {
          "date": "2026-09-16T19:08:34Z",
          "number": "3",
          "summary": "unknown changes"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python311-Markdown-3.5.2-150600.3.3.1.noarch",
                "product": {
                  "name": "python311-Markdown-3.5.2-150600.3.3.1.noarch",
                  "product_id": "python311-Markdown-3.5.2-150600.3.3.1.noarch",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:a:python-markdown:markdown:3.5.2:*:*:*:*:python:*:*",
                    "purl": "pkg:rpm/suse/python311-Markdown@3.5.2-150600.3.3.1?arch=noarch\u0026upstream=python-Markdown-3.5.2-150600.3.3.1.src.rpm"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "openSUSE Leap 15.6",
                "product": {
                  "name": "openSUSE Leap 15.6",
                  "product_id": "openSUSE Leap 15.6",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:opensuse:leap:15.6"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python311-Markdown-3.5.2-150600.3.3.1.noarch as component of openSUSE Leap 15.6",
          "product_id": "openSUSE Leap 15.6:python311-Markdown-3.5.2-150600.3.3.1.noarch"
        },
        "product_reference": "python311-Markdown-3.5.2-150600.3.3.1.noarch",
        "relates_to_product_reference": "openSUSE Leap 15.6"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-69534",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-69534"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Python-Markdown version 3.8 contain a vulnerability where malformed HTML-like sequences can cause html.parser.HTMLParser to raise an unhandled AssertionError during Markdown parsing. Because Python-Markdown does not catch this exception, any application that processes attacker-controlled Markdown may crash. This enables remote, unauthenticated Denial of Service in web applications, documentation systems, CI/CD pipelines, and any service that renders untrusted Markdown. The issue was acknowledged by the vendor and fixed in version 3.8.1. This issue causes a remote Denial of Service in any application parsing untrusted Markdown, and can lead to Information Disclosure through uncaught exceptions.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "openSUSE Leap 15.6:python311-Markdown-3.5.2-150600.3.3.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-69534",
          "url": "https://www.suse.com/security/cve/CVE-2025-69534"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1259256 for CVE-2025-69534",
          "url": "https://bugzilla.suse.com/1259256"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "openSUSE Leap 15.6:python311-Markdown-3.5.2-150600.3.3.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "openSUSE Leap 15.6:python311-Markdown-3.5.2-150600.3.3.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-03-06T17:04:39Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-69534"
    }
  ]
}



Log in or create an account to share your comment.




Tags
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.