| Package | Affected versions | Patched versions |
|---|---|---|
| io.undertow:undertow-core | ≥ 2.1.0, < 2.1.6< 2.0.34 | 2.1.62.0.34 |
| undertow | ≥ 2.1.0, < 2.1.6< 2.0.34 | 2.1.62.0.34 |
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.
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