CVE-2020-11100

—

CVSS 3.1

8.8 high

EPSS

61%p99

Published

Apr 2, 2020 (Apr 2, 2020)

Modified

Jun 17, 2026

Description

In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can write arbitrary bytes around a certain location on the heap via a crafted HTTP/2 request, possibly causing remote code execution.

Vendors: haproxy debian redhat fedoraproject canonical opensuse
Products: haproxy, debian linux, openshift container platform, fedora, ubuntu linux, leap
Weakness: CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (60.7%)

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