djust: Arbitrary absolute-path file read in the find_handlers_for_template MCP tool

{
  "id": "ba1345af76ecac4f18934f5073209a6093acf90116b35bd2724f06b6004f7206",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-113731",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "djust: Arbitrary absolute-path file read in the find_handlers_for_template MCP tool",
    "summary": "djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. From 0.9.0 until 1.0.10, 1.1.7, 1.2.4, and 1.3.0rc8, the find_handlers_for_template MCP tool in python/djust/mcp/server.py accepts an existing absolute template_path and reads it without restricting the resolved path to the project or configured template directories. A local MCP client can use the tool as a file existence and readability oracle and can obtain substrings that match the tool's dj-click, dj-submit, dj-change, dj-input, dj-keydown, or dj-keyup attribute pattern from files readable by the djust process. The maintainer assessment states that the MCP server communicates over local stdio as the same operating-system user and has no network listener, and the tool does not return arbitrary raw file contents. This issue is fixed in versions 1.0.10, 1.1.7, 1.2.4, and 1.3.0rc8.",
    "evidence": "cve:CVE-2026-113731",
    "products": [
      {
        "name": {
          "value": "djust",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-113731",
      "aliases": [
        "CVE-2026-113731"
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 3.3,
            "attackVector": "LOCAL",
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "integrityImpact": "NONE",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "NONE",
            "privilegesRequired": "LOW",
            "confidentialityImpact": "LOW"
          }
        }
      ],
      "affected": [
        {
          "vendor": "djust-org",
          "product": "djust",
          "versions": [
            {
              "status": "affected",
              "version": ">= 0.9.0, < 1.0.10"
            },
            {
              "status": "affected",
              "version": ">= 1.1.0, < 1.1.7"
            },
            {
              "status": "affected",
              "version": ">= 1.2.0.dev0, < 1.2.4"
            },
            {
              "status": "affected",
              "version": ">= 1.3.0.dev0, < 1.3.0rc8"
            }
          ]
        }
      ],
      "modified": "2026-10-28T15:54:09.246Z",
      "provider": "cve",
      "references": [
        "https://github.com/djust-org/djust/security/advisories/GHSA-r57g-mc79-8hj2",
        "https://github.com/djust-org/djust/commit/45a5045793ebe7c9c2df86b0ad34275af6822619",
        "https://github.com/djust-org/djust/commit/744bccf699c65c815d9379b36236a7c5592a339b",
        "https://github.com/djust-org/djust/commit/85eed7caaf620bdb08986f2f3bb79432c0d3d715",
        "https://github.com/djust-org/djust/commit/a62caf6b4ef540ad688d4dfdfa407ff914c78728",
        "https://github.com/djust-org/djust/releases/tag/v1.0.10",
        "https://github.com/djust-org/djust/releases/tag/v1.1.7",
        "https://github.com/djust-org/djust/releases/tag/v1.2.4",
        "https://github.com/djust-org/djust/releases/tag/v1.3.0rc8"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-113731",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-28T15:53:41.490139Z"
                  }
                }
              }
            ],
            "references": [
              {
                "url": "https://github.com/djust-org/djust/security/advisories/GHSA-r57g-mc79-8hj2",
                "tags": [
                  "exploit"
                ]
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-28T15:54:09.246Z"
            }
          }
        ],
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-20T21:31:28.008Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-113731",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 459166,
  "published_at": "2026-10-20T21:31:28.008+00:00"
}