PyPI/blacksheep CVE-2026-22779: medium 5.3, EPSS 0.37%

BlackSheep's ClientSession is vulnerable to CRLF injection

Action: Upgrade blacksheep to 2.4.6 or later.

pip install blacksheep==2.4.6

Affected

Fixed versions

Sources

• osv: PYSEC-2026-1222
• nvd: CVE-2026-22779
• https://github.com/Neoteroi/BlackSheep/security/advisories/GHSA-6pw3-h7xf-x4gp
• https://github.com/Neoteroi/BlackSheep/commit/bd4ecb9542b5d52442276b5a6907931b90f38d12
• https://github.com/Neoteroi/BlackSheep
• https://github.com/Neoteroi/BlackSheep/releases/tag/v2.4.6
• https://pypi.org/project/blacksheep
• https://github.com/advisories/GHSA-6pw3-h7xf-x4gp

CVE-2026-22779 · published 2026-07-07T16:03:18.908634Z · modified 2026-07-07T17:47:32.644648259Z · JSON