{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apache:nifi:2.11.0:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.11.0"
              },
              {
                "last_affected": "2.11.0"
              }
            ],
            "source": "CPE_STRING"
          },
          "events": [
            {
              "introduced": "e296b299805a7e3ff4c99916b79cfba16c5e4870"
            },
            {
              "last_affected": "e296b299805a7e3ff4c99916b79cfba16c5e4870"
            }
          ],
          "repo": "https://github.com/apache/nifi",
          "type": "GIT"
        }
      ],
      "versions": [
        "2.11.0"
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "apache",
    "cwe_ids": [
      "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70469.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "2.11.0"
          },
          {
            "last_affected": "2.11.0"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Apache NiFi 2.11.0 disabled support for gzip-encoded HTTP requests for the application REST API and rejected requests that included the standard Content-Encoding header indicating gzip encoding. The framework enforcement filter did not check multiple instances of the Content-Encoding header and did not reject non-standard identifiers for gzip encoding, allowing a malicious client to send crafted requests that could consume excessive amounts of memory. Upgrading to Apache NiFi 2.12.0 is the recommended mitigation, which disables decompression of gzip-encoded HTTP requests regardless of header number or encoding identifiers.",
  "id": "CVE-2026-70469",
  "modified": "2026-09-23T03:30:52.078874924Z",
  "published": "2026-09-16T19:38:42.341Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/16/7"
    },
    {
      "type": "WEB",
      "url": "https://repo.maven.apache.org/maven2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70469.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70469"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Apache NiFi: Improper Handling of Case Sensitivity for Content-Encoding in HTTP Requests"
}