CVE-2026-46338

{
  "id": "CVE-2026-46338",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-16T19:16:45.733",
  "lastModified": "2026-10-24T20:10:00.137",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PyMdown Extensions is a set of extensions for the Python-Markdown markdown project. From 10.0.1 until 10.21.3, pymdownx.snippets uses a string-prefix containment check in SnippetPreprocessor.get_snippet_path() in pymdownx/snippets.py when `restrict_base_path: True`, allowing markdown snippet directives to read files from sibling paths that share the same base_path prefix, such as docs and docs_internal. This is a regression of CVE-2023-32309. This issue is fixed in version 10.21.3."
    },
    {
      "lang": "es",
      "value": "PyMdown Extensions es un conjunto de extensiones para el proyecto markdown Python-Markdown. Desde la versión 10.0.1 hasta la 10.21.3, pymdownx.snippets utiliza una comprobación de contención de prefijo de cadena en SnippetPreprocessor.get_snippet_path() en pymdownx/snippets.py cuando ’restrict_base_path: True’, permitiendo que las directivas de fragmento de markdown lean archivos de rutas hermanas que comparten el mismo prefijo base_path, como docs y docs_internal. Esto es una regresión de CVE-2023-32309. Este problema está solucionado en la versión 10.21.3."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "facelessuser",
          "product": "pymdown-extensions",
          "versions": [
            {
              "version": ">= 10.0.1, < 10.21.3",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-17T17:52:47.052382Z",
          "id": "CVE-2026-46338",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:facelessuser:pymdown_extensions:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "10.0.1",
              "versionEndExcluding": "10.21.3",
              "matchCriteriaId": "D48D6C57-3A70-49B2-A782-BF2B715641F8"
            }
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  ],
  "references": [
    {
      "url": "https://github.com/facelessuser/pymdown-extensions/commit/63b7835776d703d6c339cf2110d9888f676efc0c",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/facelessuser/pymdown-extensions/releases/tag/10.21.3",
      "source": "[email protected]",
      "tags": [
        "Product",
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/facelessuser/pymdown-extensions/security/advisories/GHSA-62q4-447f-wv8h",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://github.com/facelessuser/pymdown-extensions/security/advisories/GHSA-62q4-447f-wv8h",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}