Coraza from 3.0.4 before 3.8.1 Request Body Inspection Bypass via Content-Type

{
  "id": "2496d5dd948ebac5dfe5e8e17c04b5bb278e5f65a8d50ce2a7a161fe867199f0",
  "url": "https://osv.dev/vulnerability/CVE-2026-114100",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Coraza from 3.0.4 before 3.8.1 Request Body Inspection Bypass via Content-Type",
    "summary": "Coraza from 3.0.4 before 3.8.1 contains a request body inspection bypass because request-body processor selection compares the entire Content-Type value exactly, so URL-encoded bodies whose Content-Type carries a media-type parameter are never parsed. Unauthenticated attackers can send application/x-www-form-urlencoded; charset=UTF-8 to keep ARGS_POST and REQUEST_BODY empty, evading body rules while the backend still processes the payload.",
    "evidence": "osv:CVE-2026-114100",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-114100",
      "aliases": [
        "CVE-2026-114100",
        "GHSA-w253-m66g-rx24",
        "GO-2026-6698"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/corazawaf/coraza",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2468382c3cc58b6107874fe3e70f620f203d8cf5"
                },
                {
                  "fixed": "9f8521398d1ff023b958fad0b944cac265763866"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "3.0.4"
                      },
                      {
                        "fixed": "3.8.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "3.0.4"
                      },
                      {
                        "fixed": "3.8.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.8.0",
            "v3.7.0",
            "v3.6.0",
            "v3.5.0",
            "v3.4.0",
            "v3.3.3",
            "v3.3.2",
            "v3.3.1",
            "v3.3.0",
            "v3.2.1",
            "v3.2.0",
            "v3.1.0",
            "v3.0.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114100.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.048127283Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114100.json",
        "https://github.com/corazawaf/coraza/security/advisories/GHSA-w253-m66g-rx24",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-114100",
        "https://www.vulncheck.com/advisories/coraza-from-3.0.4-before-3.8.1-request-body-inspection-bypass-via-content-type"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114100.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-114100",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504435,
  "published_at": "2026-10-21T00:37:02.537+00:00"
}