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 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

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/01/4	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:httpcomponents_core::::::::
	cpe:2.3:a:apache:httpcomponents_core:5.5:alpha1::::::
	cpe:2.3:a:apache:httpcomponents_core:5.5:beta1::::::

History

06 Jul 2026, 12:53

Type	Values Removed	Values Added
CWE		NVD-CWE-noinfo
CPE		cpe:2.3:a:apache:httpcomponents_core:::::::: cpe:2.3:a:apache:httpcomponents_core:5.5:beta1:::::: cpe:2.3:a:apache:httpcomponents_core:5.5:alpha1::::::
First Time		Apache httpcomponents Core Apache
References	~~() https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy -~~	() https://lists.apache.org/thread/zmxh1pl2zohov5ntdh4lt85gfrlchgpy - Mailing List, Vendor Advisory
References	~~() http://www.openwall.com/lists/oss-security/2026/07/01/4 -~~	() http://www.openwall.com/lists/oss-security/2026/07/01/4 - Mailing List, Third Party Advisory

01 Jul 2026, 18:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/07/01/4 -
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

01 Jul 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-01 17:16

Updated : 2026-07-06 12:53

NVD link : CVE-2026-54399

Mitre link : CVE-2026-54399

CVE.ORG link : CVE-2026-54399

JSON object : View

Products Affected

apache

httpcomponents_core

CWE

CWE-400

Uncontrolled Resource Consumption

NVD-CWE-noinfo

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