cpython: Header injection in http.cookies.Morsel in Python

An injection flaw has been discovered in Python. When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters...

ROS-20260505-73-0050

A vulnerability in the http.cookies.Morsel component of the Python programming language interpreter is related to the failure to take measures to neutralize CRLF sequences. Exploitation of the vulnerability could allow a remote attacker to affect the availability of protected information...

ROS-20260505-73-0052

A vulnerability in the http.cookies.Morsel component of the Python programming language interpreter is related to the failure to take measures to neutralize CRLF sequences. Exploitation of the vulnerability may allow a remote attacker to affect the availability of protected information...

BIT-LIBPYTHON-2026-0672 Header injection in http.cookies.Morsel

When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters...

CVE-2026-0672

When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters...

CVE-2026-0672

When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters...

CVE-2026-0672

CVE-2026-0672 concerns Python’s handling of cookie/header parsing (notably http.cookies.Morsel) where user-controlled cookie values and parameters could inject HTTP headers. Connected advisories confirm related fixes across Python builds and distributions (Ubuntu USN-8018-1; Debian DLA-4455; Chai...

CVE-2026-0672 Header injection in http.cookies.Morsel

When using http.cookies.Morsel, user-controlled cookie values and parameters can allow injecting HTTP headers into messages. Patch rejects all control characters within cookie names, values, and parameters...

PT-2026-3671

Name of the Vulnerable Software and Affected Versions http.cookies.Morsel affected versions not specified Description User-controlled cookie values and parameters within http.cookies.Morsel can potentially allow the injection of HTTP headers into messages. A patch has been implemented to address...