CVE-2026-0672

N/A Unknown

Published: January 20, 2026 Modified: January 26, 2026

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/python/cpython/commit/62700107418eb2cca3fc88da036a243ea975f172

Source: cna@python.org

https://github.com/python/cpython/commit/712452e6f1d4b9f7f8c4c92ebfcaac1705faa440

Source: cna@python.org

https://github.com/python/cpython/commit/7852d72b653fea0199acf5fc2a84f6f8b84eba8d

Source: cna@python.org

https://github.com/python/cpython/commit/918387e4912d12ffc166c8f2a38df92b6ec756ca

Source: cna@python.org

https://github.com/python/cpython/commit/95746b3a13a985787ef53b977129041971ed7f70

Source: cna@python.org

https://github.com/python/cpython/commit/b1869ff648bbee0717221d09e6deff46617f3e85

Source: cna@python.org

https://github.com/python/cpython/issues/143919

Source: cna@python.org

https://github.com/python/cpython/pull/143920

Source: cna@python.org

https://mail.python.org/archives/list/security-announce@python.org/thread/6VFLQQEIX673KXKFUZXCUNE5AZOGZ45M/

Source: cna@python.org

9 reference(s) from NVD

Quick Stats

CVSS v3 Score

N/A / 10.0

EPSS (Exploit Probability)

0.2%

37th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-93

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