This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-54428 →

DEBIAN-CVE-2026-54428

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 earli...

Original description

The description as published by the source.

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: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:13 httpcomponents-core

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 httpcomponents-core

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:12 httpcomponents-core5

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 httpcomponents-core5

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 httpcomponents-core5

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.3-1"}]}]

References

advisory security-tracker.debian.org