CVE-2026-68981: Apache NiFi: Uncontrolled Resource Consumption through Decompression of HTTP Requests

Published Aug 3, 2026

Updated

Apache NiFi 1.5.0 through 2.10.0 support gzip-encoded HTTP requests for the application REST API using a Jersey encoding filter. The framework enforced a configurable maximum request size on the compressed payload rather than the decompressed output, allowing a malicious client to send crafted requests that could consume excessive amounts of memory. Upgrading to Apache NiFi 2.11.0 is the recommended mitigation, which relocates response compression to Jetty Server and disables decompression of gzip-encoded HTTP requests.

Affected Software

1 affected component

Apache nifi>=1.5.0<=2.10.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade Apache NiFi to a version that resolves this vulnerability.
Fixed in 2.11.0
Configuration
Upgrade to Apache NiFi 2.11.0, which disables decompression of gzip-encoded HTTP requests (relocates response compression to Jetty Server).
Jetty Server (Apache NiFi) decompression of gzip-encoded HTTP requests = disabled

Event History

Aug 3, 2026

CVE Published

via MITRE·07:59 PM

Data Sourced

via MITRE·07:59 PM

DescriptionWeakness

Data Sourced

via NVD·08:17 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2026-68981?

CVE-2026-68981 has a severity rating of high, with a CVSS score of 8.8.

How do I fix CVE-2026-68981?

To mitigate CVE-2026-68981, ensure you are using an updated version of Apache NiFi beyond 2.10.0 that addresses this vulnerability.

What does CVE-2026-68981 affect?

CVE-2026-68981 affects Apache NiFi versions 1.5.0 through 2.10.0, specifically concerning gzip-encoded HTTP requests.

What type of vulnerability is CVE-2026-68981?

CVE-2026-68981 is a vulnerability related to uncontrolled resource consumption due to improper handling of decompressed HTTP requests.

What are the consequences of exploiting CVE-2026-68981?

Exploiting CVE-2026-68981 can allow a malicious client to consume excessive resources on the server, potentially leading to denial-of-service conditions.

CVE-2026-68981: Apache NiFi: Uncontrolled Resource Consumption through Decompression of HTTP Requests

Affected Software

Remediation

Event History

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Frequently Asked Questions

What is the severity of CVE-2026-68981?

How do I fix CVE-2026-68981?

What does CVE-2026-68981 affect?

What type of vulnerability is CVE-2026-68981?

What are the consequences of exploiting CVE-2026-68981?

Company

Resources

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Frequently Asked Questions

What is the severity of CVE-2026-68981?

How do I fix CVE-2026-68981?

What does CVE-2026-68981 affect?

What type of vulnerability is CVE-2026-68981?

What are the consequences of exploiting CVE-2026-68981?