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.
CVSS Details
- CVSS 4.0 Base Score: 6 (MEDIUM)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade python3.12-tkinterUpgrade python3.12-develUpgrade python3.12-idleUpgrade python3.12-libsUpgrade python3.12Upgrade python3.12-debugUpgrade python3.12-testUpgrade python3.12-rpm-macros | Apr 29, 2026 | Apr 27, 2026 |
| Amazon Linux Ami 2 | — | Upgrade python3-debuginfoUpgrade python-debuginfoUpgrade python3Upgrade python-develUpgrade python3-tkinterUpgrade python-toolsUpgrade python-debugUpgrade python3-libsUpgrade python3-develUpgrade python3-debugUpgrade python3-toolsUpgrade pythonUpgrade tkinterUpgrade python3-testUpgrade python-libsUpgrade python-test | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3.13-debuginfoUpgrade python3.14-freethreading-debugUpgrade python3.14-develUpgrade python3.12-libsUpgrade python3.14-idleUpgrade python3.11-idleUpgrade python3.12-debugsourceUpgrade python3.13-idleUpgrade python3.11-debuginfoUpgrade python3.13-tkinterUpgrade python3.11-debugsourceUpgrade python3.13-libsUpgrade python3.14-libsUpgrade python3.13-develUpgrade python3.14-freethreading-develUpgrade python3.13-debugUpgrade python3.11-libsUpgrade python3.13-freethreading-debugUpgrade python3.13-testUpgrade python3.14-freethreading-libsUpgrade python3.12-develUpgrade python3.11-tkinterUpgrade python3.14-debugUpgrade python3.12-idleUpgrade python3Upgrade python3.12-testUpgrade python-unversioned-commandUpgrade python3.12-debugUpgrade python3.11-testUpgrade python3.13-freethreadingUpgrade python3.12-tkinterUpgrade python3-develUpgrade python3.14-freethreading-testUpgrade python3.11Upgrade python3.9-debuginfoUpgrade python3.14-tkinterUpgrade python3.14Upgrade python3.14-debuginfoUpgrade python3.12-debuginfoUpgrade python3-idleUpgrade python3.12Upgrade python3.14-freethreading-tkinterUpgrade python3.14-testUpgrade python3.11-debugUpgrade python3.14-freethreading-idleUpgrade python3.14-debugsourceUpgrade python3.13-debugsourceUpgrade python3-debugUpgrade python3.14-freethreadingUpgrade python3-tkinterUpgrade python3.13Upgrade python3.11-develUpgrade python3.9-debugsourceUpgrade python3-testUpgrade python3-libs | Feb 20, 2026 | Jan 20, 2026 |
| Debian | — | Upgrade python3.9Upgrade python3.13Upgrade python3.11 | Jan 27, 2026 | Jan 27, 2026 |
| Ibm Aix | — | Apply the fix or workaround for python_advisory21 | Sep 15, 2026 | Sep 15, 2026 |
| Oracle_linux | — | Upgrade python3.12-tkinterUpgrade python3.12-idleUpgrade python3.12-debugUpgrade python3.12-develUpgrade python3.12-libsUpgrade python3.12Upgrade python3.12-testUpgrade python3.12-rpm-macros | Apr 29, 2026 | Jan 20, 2026 |
| Redhat_linux | — | Upgrade python3-tkinterUpgrade python3.12-libsUpgrade python3.12-debugUpgrade python3.12-debugsourceUpgrade python3.12-tkinterUpgrade python3.12Upgrade python3.12-rpm-macrosUpgrade python3.12-debuginfoUpgrade python3-develUpgrade python3-libsUpgrade python3-idleUpgrade python3-testUpgrade python-unversioned-commandUpgrade python3Upgrade python3.12-idleUpgrade python3-debugUpgrade python3.12-testUpgrade python3.12-develNo solution exists | Apr 29, 2026 | Jan 20, 2026 |
| Rocky_linux | — | Upgrade python3.12-develUpgrade python3.12-idleUpgrade python3-libsUpgrade python3.12-testUpgrade python3.12-debugsourceUpgrade python3-idleUpgrade python3-develUpgrade python3.12-debuginfoUpgrade python3-testUpgrade python3.12Upgrade python3Upgrade python3.12-libsUpgrade python3-tkinterUpgrade python3-debugUpgrade python3.12-debugUpgrade python3.12-tkinter | Apr 29, 2026 | Apr 28, 2026 |
| Suse | — | Upgrade python312-testsuiteUpgrade python311-base-32bitUpgrade python310-dbmUpgrade python3-baseUpgrade python-gdbmUpgrade python39-32bitUpgrade libpython3_13-1_0Upgrade python-baseUpgrade python3-idleUpgrade libpython3_4m1_0-32bitUpgrade python311-32bitUpgrade python3Upgrade python313-develUpgrade python-develUpgrade python3-tkUpgrade python312-idleUpgrade python36-baseUpgrade python311-baseUpgrade python312-dbmUpgrade python312-develUpgrade python3-cursesUpgrade python39-develUpgrade python313Upgrade libpython3_9-1_0-32bitUpgrade python313-tkUpgrade python312-docUpgrade python313-nogil-cursesUpgrade python313-base-x86-64-v3Upgrade python313-idleUpgrade python39-toolsUpgrade python-base-32bitUpgrade python310-baseUpgrade python312-base-32bitUpgrade python313-nogil-toolsUpgrade python-idleUpgrade python3-develUpgrade python3-toolsUpgrade python310-tkUpgrade python311-docUpgrade python310-docUpgrade python311Upgrade libpython3_11-1_0Upgrade python311-dbmUpgrade libpython2_7-1_0Upgrade python-demoUpgrade python39-cursesUpgrade python310-32bitUpgrade python313-nogilUpgrade python36-develUpgrade python-32bitUpgrade libpython3_13-1_0-x86-64-v3Upgrade python313-nogil-baseUpgrade python311-toolsUpgrade python39-dbmUpgrade libpython3_12-1_0-32bitUpgrade python-doc-pdfUpgrade python39-idleUpgrade python311-develUpgrade python3-docUpgrade libpython3_13t1_0Upgrade python311-testsuiteUpgrade python311-doc-devhelpUpgrade python-xmlUpgrade python313-x86-64-v3Upgrade python3-dbmUpgrade python313-doc-devhelpUpgrade python312-baseUpgrade python310-cursesUpgrade libpython3_12-1_0Upgrade python310-develUpgrade libpython3_11-1_0-32bitUpgrade python310-toolsUpgrade python39-docUpgrade python3-testsuiteUpgrade libpython3_9-1_0Upgrade python312-tkUpgrade python312-cursesUpgrade python312-32bitUpgrade python311-idleUpgrade python310-testsuiteUpgrade python313-nogil-tkUpgrade python313-nogil-develUpgrade python312-toolsUpgrade python39-doc-devhelpUpgrade python39-baseUpgrade python310-idleUpgrade python3-doc-devhelpUpgrade pythonUpgrade libpython3_6m1_0-32bitUpgrade python39-testsuiteUpgrade python311-tkUpgrade python39-base-32bitUpgrade python313-docUpgrade python36Upgrade python313-testsuiteUpgrade python312Upgrade python310Upgrade libpython3_4m1_0Upgrade libpython3_10-1_0Upgrade python313-dbmUpgrade python39Upgrade python-cursesUpgrade python313-nogil-testsuiteUpgrade python-tkUpgrade libpython2_7-1_0-32bitUpgrade python39-tkUpgrade python310-base-32bitUpgrade python313-nogil-idleUpgrade python313-nogil-dbmUpgrade python313-cursesUpgrade python312-doc-devhelpUpgrade python311-cursesUpgrade libpython3_10-1_0-32bitUpgrade python-docUpgrade libpython3_6m1_0Upgrade python310-doc-devhelpUpgrade python313-toolsUpgrade python313-base | Feb 23, 2026 | Feb 20, 2026 |
| Ubuntu | — | Upgrade libpython3.9-dev (Ubuntu Pro)Upgrade python3.13Upgrade libpython3.6 (Ubuntu Pro)Upgrade python3.10-nopieUpgrade libpython3.6-dev (Ubuntu Pro)Upgrade python3.12-devUpgrade python3.4-venv (Ubuntu Pro)Upgrade libpython3.7-testsuite (Ubuntu Pro)Upgrade libpython3.10-devUpgrade libpython3.12-testsuiteUpgrade idle-python3.12Upgrade libpython3.13Upgrade idle-python3.4 (Ubuntu Pro)Upgrade libpython3.5-testsuite (Ubuntu Pro)Upgrade python3.11-nopie (Ubuntu Pro)Upgrade python3.12-examplesUpgrade python3.4-minimal (Ubuntu Pro)Upgrade python3.12-venvUpgrade libpython3.8-testsuite (Ubuntu Pro)Upgrade python3.14-nopieUpgrade python3.13-examplesUpgrade libpython3.11-stdlib (Ubuntu Pro)Upgrade libpython3.14-stdlibUpgrade python3.7-dev (Ubuntu Pro)Upgrade python3.7-minimal (Ubuntu Pro)Upgrade python3.4-examples (Ubuntu Pro)Upgrade libpython3.14-devUpgrade python3.12Upgrade libpython3.7-minimal (Ubuntu Pro)Upgrade libpython3.7-stdlib (Ubuntu Pro)Upgrade python3.5-examples (Ubuntu Pro)Upgrade libpython3.12-minimalUpgrade idle-python3.6 (Ubuntu Pro)Upgrade python3.9-minimal (Ubuntu Pro)Upgrade libpython3.11-testsuite (Ubuntu Pro)Upgrade libpython3.9-minimal (Ubuntu Pro)Upgrade python3.8 (Ubuntu Pro)Upgrade python3.4 (Ubuntu Pro)Upgrade python3.5-minimal (Ubuntu Pro)Upgrade python3.10-docUpgrade libpython3.14-testsuiteUpgrade python3.12-docUpgrade python3.5-doc (Ubuntu Pro)Upgrade libpython3.10Upgrade libpython3.10-minimalUpgrade python3.10-devUpgrade libpython3.5 (Ubuntu Pro)Upgrade idle-python3.10Upgrade python3.5-venv (Ubuntu Pro)Upgrade python3.6-doc (Ubuntu Pro)Upgrade python3.5-dev (Ubuntu Pro)Upgrade python3.8-minimal (Ubuntu Pro)Upgrade libpython3.8-stdlib (Ubuntu Pro)Upgrade libpython3.8-minimal (Ubuntu Pro)Upgrade python3.11-examples (Ubuntu Pro)Upgrade python3.14Upgrade python3.12-minimalUpgrade python3.13-minimalUpgrade python3.12-fullUpgrade libpython3.4-testsuite (Ubuntu Pro)Upgrade libpython3.12-stdlibUpgrade libpython3.14Upgrade libpython3.6-stdlib (Ubuntu Pro)Upgrade libpython3.10-testsuiteUpgrade libpython3.4 (Ubuntu Pro)Upgrade python3.12-nopieUpgrade python3.14-docUpgrade python3.11-dev (Ubuntu Pro)Upgrade libpython3.12-devUpgrade python3.6-examples (Ubuntu Pro)Upgrade libpython3.11-minimal (Ubuntu Pro)Upgrade python3.8-venv (Ubuntu Pro)Upgrade idle-python3.11 (Ubuntu Pro)Upgrade libpython3.5-minimal (Ubuntu Pro)Upgrade python3.11-full (Ubuntu Pro)Upgrade python3.4-dev (Ubuntu Pro)Upgrade python3.6-venv (Ubuntu Pro)Upgrade libpython2.7 (Ubuntu Pro)Upgrade libpython3.11-dev (Ubuntu Pro)Upgrade python3.10-fullUpgrade python3.13-nopieUpgrade libpython3.13-minimalUpgrade libpython3.12t64Upgrade python3.7-examples (Ubuntu Pro)Upgrade python3.6-dev (Ubuntu Pro)Upgrade python2.7 (Ubuntu Pro)Upgrade libpython3.8-dev (Ubuntu Pro)Upgrade python3.13-venvUpgrade python3.10-examplesUpgrade idle-python3.9 (Ubuntu Pro)Upgrade python3.5 (Ubuntu Pro)Upgrade python3.7 (Ubuntu Pro)Upgrade python3.8-dev (Ubuntu Pro)Upgrade idle-python3.8 (Ubuntu Pro)Upgrade python3.7-venv (Ubuntu Pro)Upgrade libpython3.5-dev (Ubuntu Pro)Upgrade python3.14-venvUpgrade idle-python3.13Upgrade python3.9-dev (Ubuntu Pro)Upgrade python3.11-minimal (Ubuntu Pro)Upgrade python3.13-gdbmUpgrade python3.10-minimalUpgrade python3.8-examples (Ubuntu Pro)Upgrade python3.14-tkUpgrade python3.10-venvUpgrade python3.14-devUpgrade python3.13-devUpgrade libpython3.13-stdlibUpgrade idle-python3.14Upgrade libpython3.6-testsuite (Ubuntu Pro)Upgrade libpython3.4-minimal (Ubuntu Pro)Upgrade libpython3.9-stdlib (Ubuntu Pro)Upgrade python3.13-tkUpgrade python3.14-minimalUpgrade python3.13-fullUpgrade libpython3.13-devUpgrade python3.6-minimal (Ubuntu Pro)Upgrade python3.6 (Ubuntu Pro)Upgrade python3.11 (Ubuntu Pro)Upgrade libpython3.8 (Ubuntu Pro)Upgrade idle-python3.5 (Ubuntu Pro)Upgrade libpython3.13-testsuiteUpgrade libpython3.11 (Ubuntu Pro)Upgrade libpython3.6-minimal (Ubuntu Pro)Upgrade python3.9-full (Ubuntu Pro)Upgrade python3.14-fullUpgrade python3.14-examplesUpgrade python3.11-venv (Ubuntu Pro)Upgrade idle-python3.7 (Ubuntu Pro)Upgrade python3.14-gdbmUpgrade libpython3.10-stdlibUpgrade python3.9-doc (Ubuntu Pro)Upgrade python3.8-full (Ubuntu Pro)Upgrade python3.9-examples (Ubuntu Pro)Upgrade python3.9 (Ubuntu Pro)Upgrade python3.8-doc (Ubuntu Pro)Upgrade python3.11-doc (Ubuntu Pro)Upgrade libpython3.9-testsuite (Ubuntu Pro)Upgrade libpython3.7-dev (Ubuntu Pro)Upgrade libpython3.5-stdlib (Ubuntu Pro)Upgrade libpython3.14-minimalUpgrade python3.9-venv (Ubuntu Pro)Upgrade libpython3.7 (Ubuntu Pro)Upgrade python3.13-docUpgrade python3.10Upgrade python3.7-doc (Ubuntu Pro)Upgrade libpython3.4-dev (Ubuntu Pro)Upgrade python3.4-doc (Ubuntu Pro)Upgrade libpython3.9 (Ubuntu Pro)Upgrade libpython3.4-stdlib (Ubuntu Pro) | Feb 6, 2026 | Jan 20, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jan 20, 2026 |
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