mkdocs-include-markdown-plugin susceptible to unvalidated input colliding with substitution placeholders

{
  "id": "dfae6279a02eb1f2fe834a9356e054aa08c85035fdb860346e49d3071885bdbf",
  "url": "https://osv.dev/vulnerability/CVE-2025-59940",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "mkdocs-include-markdown-plugin susceptible to unvalidated input colliding with substitution placeholders",
    "summary": "mkdocs-include-markdown-plugin is an Mkdocs Markdown includer plugin. In versions 7.1.7 and below, there is a vulnerability where unvalidated input can collide with substitution placeholders. This issue is fixed in version 7.1.8.",
    "evidence": "osv:CVE-2025-59940",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-59940",
      "aliases": [
        "CVE-2025-59940",
        "GHSA-v39m-5m9j-m9w9",
        "PYSEC-2026-1632"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mondeja/mkdocs-include-markdown-plugin",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7466d67aa0de8ffbc427204ad2475fed07678915"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "7.1.8"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7466d67aa0de8ffbc427204ad2475fed07678915"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v7.1.7",
            "v7.1.6",
            "v7.1.5",
            "v7.1.4",
            "v7.1.3",
            "v7.1.2",
            "v7.1.1",
            "v7.0.1",
            "v7.0.0",
            "v6.2.2",
            "v6.2.1",
            "v6.2.0",
            "v6.1.1",
            "v6.1.0",
            "v6.0.7",
            "v6.0.6",
            "v6.0.5",
            "v6.0.4",
            "v6.0.3",
            "v6.0.2",
            "v6.0.1",
            "v6.0.0",
            "v5.1.0",
            "v5.0.0",
            "v4.0.4",
            "v4.0.3",
            "v4.0.2",
            "v4.0.1",
            "v4.0.0",
            "v3.9.1",
            "v3.9.0",
            "v3.8.1",
            "v3.8.0",
            "v3.7.1",
            "v3.7.0",
            "v3.6.1",
            "v3.6.0",
            "v3.5.2",
            "v3.5.1",
            "v3.5.0",
            "v3.4.1",
            "v3.4.0",
            "v3.3.0",
            "v3.2.3",
            "v3.2.2",
            "v3.2.1",
            "v3.2.0",
            "v3.1.4",
            "v3.1.1",
            "v3.1.0",
            "v3.0.1",
            "v3.0.0",
            "v2.8.0",
            "v2.7.2",
            "v2.7.1",
            "v2.7.0",
            "v2.6.1",
            "v2.6.0",
            "v2.5.0",
            "v2.4.0",
            "v2.3.0",
            "v2.2.0",
            "v2.1.2",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-59940.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.704955534Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59940.json",
        "https://github.com/mondeja/mkdocs-include-markdown-plugin/security/advisories/GHSA-v39m-5m9j-m9w9",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-59940",
        "https://github.com/mondeja/mkdocs-include-markdown-plugin/issues/274",
        "https://github.com/mondeja/mkdocs-include-markdown-plugin/commit/7466d67aa0de8ffbc427204ad2475fed07678915",
        "https://github.com/mondeja/mkdocs-include-markdown-plugin/pull/277"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59940.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-59940",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496597,
  "published_at": "2025-09-29T22:27:30.087+00:00"
}