AIKIDO-2026-11042
nginx is vulnerable to Resource Exhaustion
75
High Risk
This Affects:
nginxTL;DR
nginx HTTP/2 request handling does not cap the number of request header fields independently from decoded header size. A client can use HPACK indexed references to send many tiny header fields cheaply, then stall the response stream so per-request allocations remain live. Pre-fix servers can suffer remote memory exhaustion and availability loss from a small number of HTTP/2 connections. The fix adds the max_headers directive with a default limit and rejects requests that exceed it.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and HTTP/2 is enabled.
Background info
nginx is vulnerable to Resource Exhaustion in versions 1.9.5 - 1.29.7.
How to fix this
Upgrade the nginx library to the patch version.
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
I consent to receiving marketing communications based on Aikido’s Privacy Policy.
SOC 2Compliant
ISO 27001Compliant