Blacksheep

1 CVEs product

Monthly

CVE-2026-22779 MEDIUM PATCH This Month

BlackSheep's HTTP client prior to version 2.4.6 is vulnerable to CRLF injection due to insufficient header validation, allowing attackers to inject malicious headers or forge HTTP requests when developers pass unsanitized user input into header fields. Only applications using BlackSheep as an HTTP client are affected; the server component is not impacted. A patch is available in version 2.4.6 and later.

Python Blacksheep
NVD GitHub
CVSS 3.1
5.3
EPSS
0.0%
CVE-2026-22779
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

BlackSheep's HTTP client prior to version 2.4.6 is vulnerable to CRLF injection due to insufficient header validation, allowing attackers to inject malicious headers or forge HTTP requests when developers pass unsanitized user input into header fields. Only applications using BlackSheep as an HTTP client are affected; the server component is not impacted. A patch is available in version 2.4.6 and later.

Python Blacksheep
NVD GitHub

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