Resource exhaustion in Apache Software Foundation Httpcomponents Core
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 sen…
Vulnerability class: DoS (Denial of Service)
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Software Foundation Httpcomponents Core — versions 5.5-alpha, 5.0-alpha
Weakness classification (CWE)
References
- security@apache.org (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-54399?
- CVE-2026-54399 is a high-severity vulnerability in Apache Software Foundation Httpcomponents Core, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-07-01.
- How severe is CVE-2026-54399?
- High severity. CVSS v3 base score is 7.5 out of 10.