CVE-2026-54428

Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder 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 oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied.

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/5zjp8vczvxq19pw2rvhs21q446bhl0sd	Mitigation Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/07/01/3	Mitigation 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

No history.

Information

Published : 2026-07-01 18:16

Updated : 2026-07-24 20:03

NVD link : CVE-2026-54428

Mitre link : CVE-2026-54428

CVE.ORG link : CVE-2026-54428

JSON object : View

Products Affected

apache

httpcomponents_core

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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