VDB
DEBIAN-CVE-2021-20220
DEBIAN-CVE-2021-20220
PUBLISHED
CVSS 4.800000190734863 MEDIUM
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.
Risk Scores
CVSS v3.1
4.800000190734863
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | undertow | 0, 1.3.11-1, 1.3.16-1 |
Timeline
- Feb 23, 2021 CVE Published
- Apr 28, 2026 CVE Updated