{"id":"CVE-2026-70469","title":"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","summary":"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 c…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-409"],"vendor":"apache","product":"nifi","affected":["nifi = 2.11.0"],"published":"2026-09-16","updated":"2026-09-21","sourceUpdated":"2026-09-21T13:42:42.460","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70469","references":[{"url":"https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/16/7","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"epss":0.00368,"epssPercentile":0.30542,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-17T19:38:13.718708Z"},"ingestedAt":"2026-09-16T20:03:30.765Z","slug":"CVE-2026-70469","body":"## Overview\n\nApache 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.\n\n## Affected\n\n- `nifi = 2.11.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":206570,"id":"CVE-2026-70469","ts":1789676932245,"field":"cvss","old":null,"new":"7.5"},{"seq":206569,"id":"CVE-2026-70469","ts":1789676932245,"field":"severity","old":"none","new":"high"}]}