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

{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "cveMetadata": {
    "cveId": "CVE-2026-113731",
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "dateUpdated": "2026-10-20T21:31:28.008Z",
    "dateReserved": "2026-10-20T16:03:14.864Z",
    "datePublished": "2026-10-20T21:31:28.008Z",
    "state": "PUBLISHED"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M",
        "dateUpdated": "2026-10-20T21:31:28.008Z"
      },
      "title": "djust: Arbitrary absolute-path file read in the find_handlers_for_template MCP tool",
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "affected": [
        {
          "vendor": "djust-org",
          "product": "djust",
          "versions": [
            {
              "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",
              "status": "affected"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
              "cweId": "CWE-22",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://github.com/djust-org/djust/security/advisories/GHSA-r57g-mc79-8hj2",
          "name": "https://github.com/djust-org/djust/security/advisories/GHSA-r57g-mc79-8hj2",
          "tags": [
            "x_refsource_CONFIRM"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/commit/45a5045793ebe7c9c2df86b0ad34275af6822619",
          "name": "https://github.com/djust-org/djust/commit/45a5045793ebe7c9c2df86b0ad34275af6822619",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/commit/744bccf699c65c815d9379b36236a7c5592a339b",
          "name": "https://github.com/djust-org/djust/commit/744bccf699c65c815d9379b36236a7c5592a339b",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/commit/85eed7caaf620bdb08986f2f3bb79432c0d3d715",
          "name": "https://github.com/djust-org/djust/commit/85eed7caaf620bdb08986f2f3bb79432c0d3d715",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/commit/a62caf6b4ef540ad688d4dfdfa407ff914c78728",
          "name": "https://github.com/djust-org/djust/commit/a62caf6b4ef540ad688d4dfdfa407ff914c78728",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/releases/tag/v1.0.10",
          "name": "https://github.com/djust-org/djust/releases/tag/v1.0.10",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/releases/tag/v1.1.7",
          "name": "https://github.com/djust-org/djust/releases/tag/v1.1.7",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/releases/tag/v1.2.4",
          "name": "https://github.com/djust-org/djust/releases/tag/v1.2.4",
          "tags": [
            "x_refsource_MISC"
          ]
        },
        {
          "url": "https://github.com/djust-org/djust/releases/tag/v1.3.0rc8",
          "name": "https://github.com/djust-org/djust/releases/tag/v1.3.0rc8",
          "tags": [
            "x_refsource_MISC"
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "attackVector": "LOCAL",
            "attackComplexity": "LOW",
            "privilegesRequired": "LOW",
            "userInteraction": "NONE",
            "scope": "UNCHANGED",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 3.3,
            "baseSeverity": "LOW"
          }
        }
      ]
    }
  }
}