CVE-2026-54428
High · 7.5CVSS
7.5
EPSS
0.9%
Published
Jul 1, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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