CVE-2026-111181

{
  "id": "CVE-2026-111181",
  "sourceIdentifier": "ce714d77-add3-4f53-aff5-83d477b104bb",
  "published": "2026-10-22T15:17:04.763",
  "lastModified": "2026-10-22T19:17:35.797",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "body-parser is body parsing middleware for Node.js and Express. In versions before 1.20.9 and in versions from 2.0.0 before 2.4.0, a single request can crash any application using body-parser with default options. When a request carries a Content-Encoding such as gzip, body-parser pipes it into a decompression stream and, after reading the body, leaves that stream with no error listener. A payload of one valid compressed frame followed by trailing bytes decodes and the application responds normally, but the trailing bytes then reach the already-finished decoder, which emits an error that is re-thrown as an uncaught exception and terminates the process. No matching route is required because body parsing runs before routing, so any endpoint that parses a body is affected. The issue is fixed in body-parser 2.4.0 and 1.20.9, and users should upgrade to one of those versions or later. As a workaround, disable request-body inflation (set the body-parser inflate option to false) so encoded requests are rejected before any decompression stream is created."
    }
  ],
  "affected": [
    {
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb",
      "affectedData": [
        {
          "vendor": "body-parser",
          "product": "body-parser",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/body-parser",
          "versions": [
            {
              "version": "2.0.0",
              "lessThan": "2.4.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "2.4.0",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "0",
              "lessThan": "1.20.9",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "1.20.9",
              "versionType": "semver",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "ce714d77-add3-4f53-aff5-83d477b104bb",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-22T18:26:41.855566Z",
          "id": "CVE-2026-111181",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-248"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://cna.openjsf.org/security-advisories.html",
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb"
    },
    {
      "url": "https://github.com/expressjs/body-parser/security/advisories/GHSA-27r3-jxmh-p828",
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb"
    }
  ]
}