CVE-2019-9513CWE-400

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service

High · published August 13, 2019

Patch now

High probability of exploitation

CVSS calls it high at 7.5. It sits in the 99.6th percentile for exploit probability.

CVSS v3.0
7.5
EPSS
82%
Percentile
99.6
In the wild
Unconfirmed
What it is

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.

The record
Technical detail
CVSS v3.0
7.5 · HIGH
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.81556 · 99.6th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2019-08-13T20:50Z
EPSS history
Timeline
  • 13 AUG 20:50Z
    Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service
    cvelistv5