CVE-2021-20220CWE-444

A flaw was found in Undertow

published February 23, 2021

CVSS
—
EPSS
1%
Percentile
67.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01200 · 67.9th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2021-02-23T17:21Z
EPSS history
Timeline
  • 23 FEB 17:21Z
    A flaw was found in Undertow
    cvelistv5