VULNERABILITY INTELLIGENCE

CVE-2020-27782

CVSS score7.5 HIGH
EPSS probability1.38%
CISA KEVNot currently listed
Published2021-02-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.

Weakness classification

  • secalert@redhat.com: CWE-400

Primary references