CVE-2026-54399

httpcomponents-core5: Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 a...

CVE-2026-54399 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-54399, released July 1, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0078
56th percentile

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

Where it's fixed

ProductFixed inFixReleased
Linux
httpcomponents-core · amzn 2023 4.4.13-6.amzn2023.0.4 ALAS2023-2026-1948 Jul 20, 2026
httpcomponents-core-javadoc · amzn 2023 4.4.13-6.amzn2023.0.4 ALAS2023-2026-1948 Jul 20, 2026
httpcomponents-core5 · Debian 14 5.4.3-1 DEBIAN-CVE-2026-54399 Jul 1, 2026
javapackages-bootstrap · amzn 2023 1.5.0^20220105.git9f283b7-3.amzn2023.0.10 ALAS2023-2026-2055 Aug 17, 2026

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