{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "736fd39fe9cd59f5d51636d25e1857d88ddbd0bd"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v1.11.1",
                "range": [
                  {
                    "fixed": "6d04519c09ce4b42acf791359e770c7fff5d4840"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "736fd39fe9cd59f5d51636d25e1857d88ddbd0bd"
            },
            {
              "fixed": "6d04519c09ce4b42acf791359e770c7fff5d4840"
            }
          ],
          "repo": "https://github.com/mbinorg/mbin",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g3r9-j6w4-2257"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126569.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "1.2.1"
              },
              {
                "fixed": "1.11.1"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "1.2.1"
              },
              {
                "fixed": "1.11.1"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "Mbin 1.2.1 before 1.11.1 contains a stored cross-site scripting vulnerability in EmbedElement::buildDestructed() that renders nested Markdown image alt text and URL without HTML escaping. Authenticated users can embed HTML in the alt text of an image inside a link in entries, comments, posts, messages, or bios to run script in viewers' browsers.",
  "id": "CVE-2026-126569",
  "modified": "2026-11-12T10:31:13.709510566Z",
  "published": "2026-11-11T02:36:05.461Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126569.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/MbinOrg/mbin/releases/tag/v1.11.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/MbinOrg/mbin/security/advisories/GHSA-g3r9-j6w4-2257"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126569"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/mbin-1.2.1-before-1.11.1-stored-xss-via-markdown-image-nested-in-link"
    },
    {
      "type": "FIX",
      "url": "https://github.com/MbinOrg/mbin/commit/736fd39fe9cd59f5d51636d25e1857d88ddbd0bd"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MbinOrg/mbin"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/MbinOrg/mbin/blob/v1.11.0/src/Markdown/CommonMark/EmbedElement.php#L57-L67"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Mbin 1.2.1 before 1.11.1 Stored XSS via Markdown Image Nested in Link"
}