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CVE-2026-112991

🗓️ 19 Oct 2026 22:19:50Reported by CIRCLType 
cve
 cve
🔗 web.nvd.nist.gov👁 44 Views🌐 WEB

Authenticated SSRF in MISP html_to_markdown module via incomplete IP range blocking.

Related
Affected
Refs
Paths
[
  {
    "cpes": [
      "cpe:2.3:a:misp:misp_modules_\\(html_to_markdown_expansion_module\\):*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "modules": [
      "misp_modules/modules/expansion/html_to_markdown.py"
    ],
    "product": "misp-modules",
    "programFiles": [
      "misp_modules/modules/expansion/html_to_markdown.py"
    ],
    "repo": "https://github.com/misp/misp-modules",
    "vendor": "MISP",
    "versions": [
      {
        "lessThanOrEqual": "3.0.12",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
urlrequest body/attributes/addThe html_to_markdown expansion module in MISP Modules fails to properly validate URLs in attributes, allowing an attacker to perform SSRF by providing URLs pointing to internal IP ranges (e.g., 0.0.0.0/8, 100.64.0.0/10, fc00::/7, fe80::/10).CWE-918
urlrequest body/attributes/updateThe html_to_markdown expansion module in MISP Modules fails to properly validate URLs in attributes, allowing an attacker to perform SSRF by providing URLs pointing to internal IP ranges (e.g., 0.0.0.0/8, 100.64.0.0/10, fc00::/7, fe80::/10).CWE-918

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20 Oct 2026 20:17Current
5.9Medium risk
Vulners AI Score5.9
CVSS 46.3
EPSS0.00324
SSVC
44