Amazon Linux 2023 Security Advisory: ALAS2023-2026-1948
Advisory Released Date: 2026-07-20
Advisory Updated Date: 2026-07-20
Severity:
Important
Issue Overview:
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 (CVE-2026-54399)
Affected Packages:
httpcomponents-core
Issue Correction:
Run dnf update httpcomponents-core --releasever 2023.12.20260720 or dnf update --advisory ALAS2023-2026-1948 --releasever 2023.12.20260720 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
noarch:
httpcomponents-core-4.4.13-6.amzn2023.0.4.noarch
httpcomponents-core-javadoc-4.4.13-6.amzn2023.0.4.noarch
src:
httpcomponents-core-4.4.13-6.amzn2023.0.4.src