CVE-2026-54428 — Apache HttpComponents Core: HPackDecoder Unlimited Header List Size Before SETTINGS ACK
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 attack…
Published: 2026-07-01 · CVSS: 7.5 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7