---
title: "CVE-2026-70469: Apache NiFi - Denial of Service"
description: "Apache NiFi 2.11.0 contains a denial of service vulnerability caused by improper handling of multiple or non-standard gzip Content-Encoding headers in the REST API, letting attackers consume excessive memory, exploit requires sending crafted HTTP requests."
url: https://panop.io/threat-heartbeat/CVE-2026-70469/
---

# CVE-2026-70469 Apache NiFi - Denial of Service

Apache NiFi 2.11.0 contains a denial of service vulnerability caused by improper handling of multiple or non-standard gzip Content-Encoding headers in the REST API, letting attackers consume excessive memory, exploit requires sending crafted HTTP requests.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.62% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-70469)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-409](https://cwe.mitre.org/data/definitions/409.html)

## Vendor fix

Upgrade to Apache NiFi 2.12.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-70469](https://nvd.nist.gov/vuln/detail/CVE-2026-70469)
- [https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0](https://lists.apache.org/thread/mjpv7r4djgn7fdvhnpjwgr2rcto47mx0)
- [http://www.openwall.com/lists/oss-security/2026/09/16/7](http://www.openwall.com/lists/oss-security/2026/09/16/7)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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