CVE-2026-54399
Received Received - Intake

Uncontrolled Resource Consumption in Apache HttpComponents Core

Publication date: 2026-07-01

Last updated on: 2026-07-01

Assigner: Apache Software Foundation

Description
Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length

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Meta Information

Published
2026-07-01
Last Modified
2026-07-01
Generated
2026-07-01
AI Q&A
2026-07-01
EPSS Evaluated
N/A
NVD
CVE-2026-54399
EUVD
EUVD-2026-41094

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache httpcomponents_core to 5.5-beta1 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

This vulnerability is an Uncontrolled Resource Consumption issue in the HTTP/1.1 message parser of Apache HttpComponents Core versions 5.4.2 and earlier, and 5.5-beta1 and earlier.

It allows a remote attacker to cause a denial of service by exhausting memory resources. This is achieved by sending HTTP messages that contain an excessive number of headers or headers with excessive length.

Impact Analysis

The primary impact of this vulnerability is a denial of service condition.

An attacker can exploit this flaw to consume excessive memory on the affected system, potentially causing the application or server to crash or become unresponsive.

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