GitHub Advisoryadvisory · Maven

GHSA-hf6x-8p5f-cgmf Apache HttpComponents Core HTTP/1 header parsing can cause memory-exhaustion denial of service

HIGH Published 2026-07-01 Modified 2026-08-12 Official page ↗
Aliases
CVE-2026-54399
Ecosystem
Maven
Packages
org.apache.httpcomponents.core5:httpcore5
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400
Reviewed
2026-08-12

Affected packages

• Maven org.apache.httpcomponents.core5:httpcore5: < 5.4.3 → fixed in 5.4.3 • Maven org.apache.httpcomponents.core5:httpcore5: >= 5.5-alpha1, < 5.5-beta2 → fixed in 5.5-beta2

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 a remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length

Related

Alias · CVE (1)

  • CVE-2026-54399 Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1… vulnerability

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References