CVE-2020-10687

A flaw was discovered in all versions of Undertow before Undertow 2.2.0.Final, where 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.

• CWE-444
• CWE-444

• https://bugzilla.redhat.com/show_bug.cgi?id=1785049Issue Tracking, Vendor Advisory
• https://lists.apache.org/thread.html/r6603513ea8afbf6857fd77ca5888ec8385d0af493baa4250e28c351c%40%3Cdev.cxf.apache.org%3E
• https://security.netapp.com/advisory/ntap-20220210-0015/Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=1785049Issue Tracking, Vendor Advisory
• https://lists.apache.org/thread.html/r6603513ea8afbf6857fd77ca5888ec8385d0af493baa4250e28c351c%40%3Cdev.cxf.apache.org%3E
• https://security.netapp.com/advisory/ntap-20220210-0015/Third Party Advisory

Published

Sep 23, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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