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.
Scores
CVSS v3
4.8
EPSS
0.0018
EPSS Percentile
39.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Details
CWE
CWE-444
Status
published
Products (4)
io.undertow/undertow-core
2.1.0 - 2.1.6Maven
netapp/active_iq_unified_manager
(3 CPE variants)
netapp/oncommand_workflow_automation
redhat/undertow
< 2.0.34
Published
Feb 23, 2021
Tracked Since
Feb 18, 2026