{"id":"CVE-2026-0672","details":"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.","aliases":["BIT-libpython-2026-0672","BIT-python-2026-0672","BIT-python-min-2026-0672","PSF-2026-5"],"modified":"2026-04-21T18:41:50.922951961Z","published":"2026-01-20T22:15:52.680Z","related":["CGA-cp3f-r43j-qh98","SUSE-SU-2026:0590-1","SUSE-SU-2026:0612-1","SUSE-SU-2026:0613-1","SUSE-SU-2026:0642-1","SUSE-SU-2026:0643-1","SUSE-SU-2026:0644-1","SUSE-SU-2026:0645-1","SUSE-SU-2026:0663-1","SUSE-SU-2026:0664-1","SUSE-SU-2026:0693-1","SUSE-SU-2026:0767-1","SUSE-SU-2026:1349-1","SUSE-SU-2026:20543-1","SUSE-SU-2026:20581-1","SUSE-SU-2026:20665-1","SUSE-SU-2026:20710-1","SUSE-SU-2026:20768-1","SUSE-SU-2026:20796-1","openSUSE-SU-2026:10126-1","openSUSE-SU-2026:10200-1","openSUSE-SU-2026:10206-1","openSUSE-SU-2026:10221-1","openSUSE-SU-2026:10222-1","openSUSE-SU-2026:10223-1","openSUSE-SU-2026:20254-1"],"references":[{"type":"WEB","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/6VFLQQEIX673KXKFUZXCUNE5AZOGZ45M/"},{"type":"REPORT","url":"https://github.com/python/cpython/issues/143919"},{"type":"FIX","url":"https://github.com/python/cpython/commit/918387e4912d12ffc166c8f2a38df92b6ec756ca"},{"type":"FIX","url":"https://github.com/python/cpython/commit/95746b3a13a985787ef53b977129041971ed7f70"},{"type":"FIX","url":"https://github.com/python/cpython/commit/b1869ff648bbee0717221d09e6deff46617f3e85"},{"type":"FIX","url":"https://github.com/python/cpython/pull/143920"},{"type":"FIX","url":"https://github.com/python/cpython/commit/62700107418eb2cca3fc88da036a243ea975f172"},{"type":"FIX","url":"https://github.com/python/cpython/commit/712452e6f1d4b9f7f8c4c92ebfcaac1705faa440"},{"type":"FIX","url":"https://github.com/python/cpython/commit/7852d72b653fea0199acf5fc2a84f6f8b84eba8d"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"62700107418eb2cca3fc88da036a243ea975f172"}]},{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"712452e6f1d4b9f7f8c4c92ebfcaac1705faa440"}]},{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"7852d72b653fea0199acf5fc2a84f6f8b84eba8d"}]},{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"918387e4912d12ffc166c8f2a38df92b6ec756ca"}]},{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"95746b3a13a985787ef53b977129041971ed7f70"}]},{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"b1869ff648bbee0717221d09e6deff46617f3e85"}]}],"versions":["v0.9.8","v0.9.9","v1.0.1","v1.0.2","v1.1","v1.1.1","v1.2","v1.2b1","v1.2b2","v1.2b3","v1.2b4","v1.3","v1.3b1","v1.4","v1.4b1","v1.4b2","v1.4b3","v1.5","v1.5.1","v1.5.2","v1.5.2a1","v1.5.2a2","v1.5.2b1","v1.5.2b2","v1.5.2c1","v1.5a1","v1.5a2","v1.5a3","v1.5a4","v1.5b1","v1.5b2","v1.6a1","v1.6a2","v2.0","v2.0b1","v2.0b2","v2.0c1","v2.1","v2.1a1","v2.1a2","v2.1b1","v2.1b2","v2.1c1","v2.1c2","v2.2a3","v2.3c1","v2.3c2","v2.4","v2.4a1","v2.4a2","v2.4a3","v2.4b1","v2.4b2","v2.4c1","v3.0a1","v3.0a2","v3.0a3","v3.0a4","v3.0a5","v3.0b1","v3.0b2","v3.0b3","v3.0rc1","v3.0rc2","v3.0rc3","v3.1","v3.10.0a1","v3.10.0a7","v3.10.0b1","v3.10.0b2","v3.10.0b3","v3.10.0b4","v3.10.0rc1","v3.10.0rc2","v3.10.1","v3.10.10","v3.10.11","v3.10.12","v3.10.13","v3.10.14","v3.10.15","v3.10.16","v3.10.17","v3.10.18","v3.10.19","v3.10.2","v3.10.3","v3.10.4","v3.10.5","v3.10.6","v3.10.7","v3.10.8","v3.10.9","v3.11.0a3","v3.11.0a4","v3.11.0a5","v3.11.0a6","v3.11.0a7","v3.11.0b1","v3.11.0b2","v3.11.0b3","v3.11.0b4","v3.11.0b5","v3.11.0rc1","v3.11.0rc2","v3.11.1","v3.11.10","v3.11.11","v3.11.12","v3.11.13","v3.11.14","v3.11.2","v3.11.3","v3.11.4","v3.11.5","v3.11.6","v3.11.7","v3.11.8","v3.11.9","v3.12.0","v3.12.0a1","v3.12.0a2","v3.12.0a3","v3.12.0a4","v3.12.0a5","v3.12.0a6","v3.12.0a7","v3.12.0b1","v3.12.0b2","v3.12.0b3","v3.12.0b4","v3.12.0rc1","v3.12.0rc2","v3.12.0rc3","v3.12.1","v3.12.10","v3.12.11","v3.12.12","v3.12.2","v3.12.3","v3.12.4","v3.12.5","v3.12.6","v3.12.7","v3.12.8","v3.12.9","v3.13.0","v3.13.0a1","v3.13.0a2","v3.13.0a3","v3.13.0a4","v3.13.0a5","v3.13.0a6","v3.13.0b1","v3.13.0b2","v3.13.0b3","v3.13.0b4","v3.13.0rc1","v3.13.0rc2","v3.13.0rc3","v3.13.1","v3.13.10","v3.13.11","v3.13.2","v3.13.3","v3.13.4","v3.13.5","v3.13.6","v3.13.7","v3.13.8","v3.14.0","v3.14.0a1","v3.14.0a2","v3.14.0a3","v3.14.0a4","v3.14.0a5","v3.14.0a6","v3.14.0a7","v3.14.0b1","v3.14.0b2","v3.14.0b3","v3.14.0b4","v3.14.0rc1","v3.14.0rc2","v3.14.0rc3","v3.14.1","v3.14.2","v3.15.0a1","v3.15.0a2","v3.15.0a3","v3.15.0a4","v3.15.0a5","v3.1a1","v3.1a2","v3.1b1","v3.1rc1","v3.1rc2","v3.2a1","v3.2a2","v3.2a3","v3.2a4","v3.2b1","v3.2b2","v3.2rc1","v3.2rc2","v3.2rc3","v3.3.0a2","v3.3.0a3","v3.3.0a4","v3.3.0b1","v3.3.0b2","v3.3.0rc1","v3.3.0rc2","v3.3.0rc3","v3.4.0a1","v3.4.0a2","v3.4.0a3","v3.4.0a4","v3.4.0b1","v3.4.0b2","v3.4.0b3","v3.5.0a1","v3.5.0a2","v3.5.0a3","v3.5.0a4","v3.5.0b1","v3.6.0a3"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