{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "3.8.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9f8521398d1ff023b958fad0b944cac265763866"
            }
          ],
          "repo": "https://github.com/corazawaf/coraza",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3wr7-993q-jrff"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-20"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114101.json"
  },
  "details": "Coraza before 3.8.1 extracts multipart upload filenames with Go's mime.ParseMediaType, which silently ignores RFC 5987 filename* parameters whose charset is not utf-8 or us-ascii. Unauthenticated attackers can send a decoy filename with filename*=iso-8859-1''shell.php, or filename* alone, so FILES-based rules never see the real name, letting dangerous uploads reach backends that honor filename*.",
  "id": "CVE-2026-114101",
  "modified": "2026-10-21T10:31:04.601127005Z",
  "published": "2026-10-21T00:37:03.229Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114101.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/corazawaf/coraza/security/advisories/GHSA-3wr7-993q-jrff"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-114101"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/coraza-before-3.8.1-multipart-filename-charset-handling-files-rule-bypass"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Coraza before 3.8.1 Multipart filename* Charset Handling FILES Rule Bypass"
}