PYSEC-2026-2650

Vulnerability from pysec - Published: 2026-07-13 15:15 - Updated: 2026-07-13 16:04
VLAI
Details

An unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. As reported by Bilal Teke.

Severity
5.8 (Medium)
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H
Impacted products
Name purl
misp-modules pkg:pypi/misp-modules
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "misp-modules",
        "purl": "pkg:pypi/misp-modules"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "3.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.196",
        "2.4.197",
        "2.4.198",
        "2.4.199",
        "2.4.200",
        "2.4.201",
        "3.0.0",
        "3.0.1",
        "3.0.2",
        "3.0.4",
        "3.0.5",
        "3.0.6",
        "3.0.7"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44363",
    "GHSA-fhq3-2gf3-8f3j"
  ],
  "details": "An unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. As reported by Bilal Teke.",
  "id": "PYSEC-2026-2650",
  "modified": "2026-07-13T16:04:52.190706Z",
  "published": "2026-07-13T15:15:40.156015Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/MISP/misp-modules/security/advisories/GHSA-fhq3-2gf3-8f3j"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44363"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MISP/misp-modules/commit/01a522f2772fc31eeed379ccf23750c8a3d401db"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/MISP/misp-modules"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/misp-modules"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-fhq3-2gf3-8f3j"
    }
  ],
  "severity": [
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "misp-modules has nsafe remote resource fetching in expansion"
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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