Rapid7

vulnerability

IBM WebSphere Application Server: CVE-2019-9512: Multiple vulnerabilities in HTTP/2 implementation used by WebSphere Application Server Liberty

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Aug 13, 2019
Added
Jan 3, 2020
Modified
Mar 27, 2026

Description

Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Solutions

ibm-was-install-8-5-ph16611-libertyibm-was-upgrade-8-5-19-0-0-10-liberty
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.