---
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: 0.00532
epssPercentile: 0.439
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-17T19:38:13.718708Z'
ingestedAt: '2026-09-16T20:03:30.765Z'
---

## Overview

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.

## Affected

- `nifi = 2.11.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.