{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-70469", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-08-04T15:09:34.902Z", "datePublished": "2026-09-16T19:38:42.341Z", "dateUpdated": "2026-09-16T20:12:06.858Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-09-16T19:38:42.341Z"}, "title": "Apache NiFi: Improper Handling of Case Sensitivity for Content-Encoding in HTTP Requests", "problemTypes": [{"descriptions": [{"description": "CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)", "lang": "en", "cweId": "CWE-409", "type": "CWE"}]}], "source": {"defect": ["NIFI-16170"], "discovery": "EXTERNAL"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache NiFi", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.nifi:nifi-jetty", "packageURL": "pkg:maven/org.apache.nifi/nifi-jetty", "versions": [{"status": "affected", "version": "2.11.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"value": "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.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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."}]}], "references": [{"url": "https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "High"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "timeline": [{"time": "2026-08-04T12:00:00.000Z", "lang": "en", "value": "reported"}], "credits": [{"lang": "en", "value": "mak3bread (Minseong Kim)", "type": "finder"}], "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/09/16/7"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-09-16T20:12:06.858Z"}}]}}

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.nifi:nifi-jetty", "packageURL": "pkg:maven/org.apache.nifi/nifi-jetty", "product": "Apache NiFi", "vendor": "Apache Software Foundation", "versions": [{"status": "affected", "version": "2.11.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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", "lastModified": "2026-09-16T21:17:13.333", "metrics": {}, "published": "2026-09-16T20:17:26.877", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/09/16/7"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-409"}], "source": "security@apache.org", "type": "Secondary"}]}

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