CVE-2026-22779 - BlackSheep ClientSession is vulnerable to CRLF injection

CVE-2026-22779 - BlackSheep ClientSession is vulnerable to CRLF injection

https://cvefeed.io/rssfeed/latest.atom / Wed, 01/14/2026 - 19:57
CVE ID : CVE-2026-22779
Published : Jan. 14, 2026, 5:16 p.m. | 41 minutes ago
Description : BlackSheep is an asynchronous web framework to build event based web applications with Python. Prior to 2.4.6, the HTTP Client implementation in BlackSheep is vulnerable to CRLF injection. Missing headers validation makes it possible for an attacker to modify the HTTP requests (e.g. insert a new header) or even create a new HTTP request. Exploitation requires developers to pass unsanitized user input directly into headers.The server part is not affected because BlackSheep delegates to an underlying ASGI server handling of response headers. This vulnerability is fixed in 2.4.6.
Severity: 6.3 | MEDIUM
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