CVE Database
/

CVE-2021-20220

Back to search

CVE-2021-20220

Published: Feb 23, 2021

Modified: Aug 3, 2024

PUBLISHED

Description

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

VendorProductVersions

n/a

undertow

affected
Undertow 2.2.0.Final, Undertow 2.1.6.Final, Undertow 2.0.34.Final

Weaknesses (CWE)

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now