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-debugUpgrade python3.12-tkinterUpgrade python3.12-libsUpgrade python3.12Upgrade python3.12-develUpgrade python3.12-idleUpgrade python3.12-rpm-macrosUpgrade python3.12-test | Apr 29, 2026 | Apr 27, 2026 |
| Amazon Linux Ami 2 | — | Upgrade python-testUpgrade tkinterUpgrade pythonUpgrade python3-testUpgrade python-libsUpgrade python3-toolsUpgrade python3-tkinterUpgrade python-toolsUpgrade python3-develUpgrade python-debugUpgrade python3-debugUpgrade python3Upgrade python3-debuginfoUpgrade python3-libsUpgrade python-debuginfoUpgrade python-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3.14-debugUpgrade python3.14-idleUpgrade python3.13-develUpgrade python3.13-debuginfoUpgrade python3.13-testUpgrade python3.11-idleUpgrade python3.13-freethreading-debugUpgrade python3.12-debugsourceUpgrade python3.12-idleUpgrade python3.13-freethreadingUpgrade python3.13-idleUpgrade python3Upgrade python3.11-debuginfoUpgrade python3.11-tkinterUpgrade python3.12-develUpgrade python3.13-tkinterUpgrade python3.12-testUpgrade python3.14-freethreading-develUpgrade python3.11-debugsourceUpgrade python3.14-libsUpgrade python3.12-libsUpgrade python3.13-debugUpgrade python3.13-libsUpgrade python3.14-freethreading-libsUpgrade python3.11-libsUpgrade python3.14-freethreading-debugUpgrade python-unversioned-commandUpgrade python3.14-develUpgrade python3.11-testUpgrade python3.12-debugUpgrade python3.12-debuginfoUpgrade python3.12Upgrade python3.11Upgrade python3.14-freethreading-tkinterUpgrade python3-develUpgrade python3.14-freethreading-testUpgrade python3-idleUpgrade python3.14-debuginfoUpgrade python3.9-debuginfoUpgrade python3.12-tkinterUpgrade python3-libsUpgrade python3-testUpgrade python3.14-tkinterUpgrade python3.9-debugsourceUpgrade python3.14-debugsourceUpgrade python3.14-freethreadingUpgrade python3.11-debugUpgrade python3.14-freethreading-idleUpgrade python3-debugUpgrade python3.14-testUpgrade python3.13Upgrade python3.11-develUpgrade python3.13-debugsourceUpgrade python3-tkinterUpgrade python3.14 | Feb 20, 2026 | Jan 20, 2026 |
| Debian | — | Upgrade python3.11Upgrade python3.13Upgrade python3.9 | 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-idleUpgrade python-unversioned-commandUpgrade python3.12-testUpgrade python3-libsUpgrade python3.12-rpm-macrosUpgrade python3-tkinterUpgrade python3-develUpgrade python3.12-idleUpgrade python3.12-libsUpgrade python3.12-tkinterUpgrade python3-testUpgrade python3.12Upgrade python3-debugUpgrade python3.12-debugUpgrade python3.12-develUpgrade python3 | Apr 29, 2026 | Jan 20, 2026 |
| Redhat_linux | — | No solution existsUpgrade python3.12-idleUpgrade python3.12-testUpgrade python3-debugUpgrade python-unversioned-commandUpgrade python3.12-develUpgrade python3Upgrade python3.12-libsUpgrade python3.12-debugUpgrade python3-idleUpgrade python3.12-debuginfoUpgrade python3.12-tkinterUpgrade python3.12-debugsourceUpgrade python3.12-rpm-macrosUpgrade python3.12Upgrade python3-tkinterUpgrade python3-libsUpgrade python3-testUpgrade python3-devel | Apr 29, 2026 | Jan 20, 2026 |
| Rocky_linux | — | Upgrade python3.12-tkinterUpgrade python3.12-debuginfoUpgrade python3.12-debugUpgrade python3-tkinterUpgrade python3.12Upgrade python3Upgrade python3.12-libsUpgrade python3-debugUpgrade python3-testUpgrade python3.12-testUpgrade python3-libsUpgrade python3-idleUpgrade python3.12-debugsourceUpgrade python3-develUpgrade python3.12-idleUpgrade python3.12-devel | Apr 29, 2026 | Apr 28, 2026 |
| Suse | — | Upgrade libpython3_6m1_0Upgrade python-docUpgrade libpython2_7-1_0-32bitUpgrade python-tkUpgrade libpython3_10-1_0-32bitUpgrade python310-base-32bitUpgrade python310-develUpgrade python313-cursesUpgrade python312-doc-devhelpUpgrade python313-nogil-dbmUpgrade python311-cursesUpgrade python313-nogil-idleUpgrade python39-tkUpgrade python312-baseUpgrade python3-testsuiteUpgrade python39-docUpgrade python313-doc-devhelpUpgrade python311-develUpgrade python310-cursesUpgrade libpython3_11-1_0-32bitUpgrade python39-doc-devhelpUpgrade python310-testsuiteUpgrade libpython3_13t1_0Upgrade python313-nogil-develUpgrade python311-testsuiteUpgrade python39-baseUpgrade libpython3_9-1_0Upgrade python313-x86-64-v3Upgrade python-xmlUpgrade python313-toolsUpgrade python3-dbmUpgrade python310-toolsUpgrade python311-doc-devhelpUpgrade python36Upgrade python39-base-32bitUpgrade python313-testsuiteUpgrade libpython3_4m1_0Upgrade python310-doc-devhelpUpgrade python313-dbmUpgrade python313-docUpgrade python-cursesUpgrade python313-nogil-tkUpgrade python39-idleUpgrade python312-toolsUpgrade libpython3_10-1_0Upgrade python312-32bitUpgrade python312-tkUpgrade python313-baseUpgrade python310Upgrade python39-testsuiteUpgrade python313-nogil-testsuiteUpgrade python39Upgrade python312-cursesUpgrade python310-idleUpgrade python311-tkUpgrade libpython3_6m1_0-32bitUpgrade python3-docUpgrade libpython3_12-1_0Upgrade pythonUpgrade python3-doc-devhelpUpgrade python311-idleUpgrade python312Upgrade python-develUpgrade python311-32bitUpgrade python-baseUpgrade libpython3_12-1_0-32bitUpgrade python-32bitUpgrade libpython3_13-1_0-x86-64-v3Upgrade python313-nogil-toolsUpgrade python311-docUpgrade python311Upgrade python3-toolsUpgrade python-doc-pdfUpgrade python312-base-32bitUpgrade python3-develUpgrade libpython2_7-1_0Upgrade python39-cursesUpgrade python36-develUpgrade python313-nogil-baseUpgrade python313-nogilUpgrade python310-tkUpgrade python310-32bitUpgrade python-demoUpgrade python311-base-32bitUpgrade python3-baseUpgrade python36-baseUpgrade python312-idleUpgrade libpython3_9-1_0-32bitUpgrade python39-develUpgrade python-gdbmUpgrade python312-testsuiteUpgrade python313-idleUpgrade python313-base-x86-64-v3Upgrade python312-docUpgrade python312-develUpgrade python313Upgrade python310-docUpgrade python310-baseUpgrade python312-dbmUpgrade python311-baseUpgrade libpython3_4m1_0-32bitUpgrade python39-toolsUpgrade python313-nogil-cursesUpgrade python313-tkUpgrade python3-cursesUpgrade python3-idleUpgrade libpython3_11-1_0Upgrade python39-dbmUpgrade python311-toolsUpgrade python311-dbmUpgrade python-idleUpgrade python-base-32bitUpgrade python313-develUpgrade libpython3_13-1_0Upgrade python39-32bitUpgrade python310-dbmUpgrade python3-tkUpgrade python3 | Feb 23, 2026 | Feb 20, 2026 |
| Ubuntu | — | Upgrade python3.9-dev (Ubuntu Pro)Upgrade python3.13-docUpgrade python3.4-doc (Ubuntu Pro)Upgrade libpython3.4-stdlib (Ubuntu Pro)Upgrade python3.14-tkUpgrade python3.11-minimal (Ubuntu Pro)Upgrade python3.10-minimalUpgrade python3.13-gdbmUpgrade libpython3.9 (Ubuntu Pro)Upgrade python3.10Upgrade libpython3.5-stdlib (Ubuntu Pro)Upgrade libpython3.7 (Ubuntu Pro)Upgrade libpython2.7 (Ubuntu Pro)Upgrade python3.11-doc (Ubuntu Pro)Upgrade python3.9-examples (Ubuntu Pro)Upgrade python3.9-venv (Ubuntu Pro)Upgrade libpython3.14-minimalUpgrade libpython3.7-dev (Ubuntu Pro)Upgrade python3.10-examplesUpgrade python3.14-examplesUpgrade python3.10-fullUpgrade python3.8-doc (Ubuntu Pro)Upgrade python3.13-nopieUpgrade python3.13-venvUpgrade python3.9 (Ubuntu Pro)Upgrade libpython3.9-testsuite (Ubuntu Pro)Upgrade python2.7 (Ubuntu Pro)Upgrade python3.6-dev (Ubuntu Pro)Upgrade libpython3.8-dev (Ubuntu Pro)Upgrade python3.7-examples (Ubuntu Pro)Upgrade idle-python3.7 (Ubuntu Pro)Upgrade python3.9-doc (Ubuntu Pro)Upgrade idle-python3.9 (Ubuntu Pro)Upgrade libpython3.12t64Upgrade python3.8-full (Ubuntu Pro)Upgrade libpython3.10-stdlibUpgrade python3.14-fullUpgrade python3.14-gdbmUpgrade libpython3.13-minimalUpgrade python3.7 (Ubuntu Pro)Upgrade libpython3.5-dev (Ubuntu Pro)Upgrade libpython3.13-testsuiteUpgrade python3.14-minimalUpgrade libpython3.8 (Ubuntu Pro)Upgrade idle-python3.5 (Ubuntu Pro)Upgrade python3.11 (Ubuntu Pro)Upgrade python3.6 (Ubuntu Pro)Upgrade libpython3.6-minimal (Ubuntu Pro)Upgrade python3.6-minimal (Ubuntu Pro)Upgrade python3.13-devUpgrade python3.14-devUpgrade python3.10-venvUpgrade python3.13-fullUpgrade idle-python3.14Upgrade libpython3.13-stdlibUpgrade libpython3.11 (Ubuntu Pro)Upgrade libpython3.13-devUpgrade idle-python3.8 (Ubuntu Pro)Upgrade libpython3.4-minimal (Ubuntu Pro)Upgrade python3.8-examples (Ubuntu Pro)Upgrade libpython3.6-testsuite (Ubuntu Pro)Upgrade python3.8-dev (Ubuntu Pro)Upgrade libpython3.9-stdlib (Ubuntu Pro)Upgrade python3.5 (Ubuntu Pro)Upgrade python3.9-full (Ubuntu Pro)Upgrade python3.11-venv (Ubuntu Pro)Upgrade python3.7-venv (Ubuntu Pro)Upgrade libpython3.11-dev (Ubuntu Pro)Upgrade python3.14-venvUpgrade python3.7-doc (Ubuntu Pro)Upgrade idle-python3.13Upgrade python3.13-tkUpgrade libpython3.4-dev (Ubuntu Pro)Upgrade libpython3.6-dev (Ubuntu Pro)Upgrade python3.4-examples (Ubuntu Pro)Upgrade libpython3.7-minimal (Ubuntu Pro)Upgrade python3.10-devUpgrade libpython3.6 (Ubuntu Pro)Upgrade python3.13Upgrade idle-python3.6 (Ubuntu Pro)Upgrade python3.12-nopieUpgrade libpython3.11-testsuite (Ubuntu Pro)Upgrade libpython3.11-minimal (Ubuntu Pro)Upgrade python3.12Upgrade python3.11-dev (Ubuntu Pro)Upgrade python3.4 (Ubuntu Pro)Upgrade python3.12-fullUpgrade python3.8-venv (Ubuntu Pro)Upgrade libpython3.14Upgrade python3.12-minimalUpgrade libpython3.4-testsuite (Ubuntu Pro)Upgrade python3.5-dev (Ubuntu Pro)Upgrade python3.11-examples (Ubuntu Pro)Upgrade python3.6-doc (Ubuntu Pro)Upgrade libpython3.8-stdlib (Ubuntu Pro)Upgrade python3.14-nopieUpgrade libpython3.10-devUpgrade python3.12-venvUpgrade python3.12-examplesUpgrade libpython3.12-testsuiteUpgrade idle-python3.12Upgrade libpython3.5-testsuite (Ubuntu Pro)Upgrade libpython3.11-stdlib (Ubuntu Pro)Upgrade idle-python3.4 (Ubuntu Pro)Upgrade libpython3.14-stdlibUpgrade libpython3.13Upgrade idle-python3.11 (Ubuntu Pro)Upgrade libpython3.5 (Ubuntu Pro)Upgrade python3.9-minimal (Ubuntu Pro)Upgrade python3.8 (Ubuntu Pro)Upgrade libpython3.9-minimal (Ubuntu Pro)Upgrade libpython3.5-minimal (Ubuntu Pro)Upgrade libpython3.10Upgrade python3.5-doc (Ubuntu Pro)Upgrade python3.4-dev (Ubuntu Pro)Upgrade python3.14Upgrade python3.10-docUpgrade libpython3.14-testsuiteUpgrade libpython3.10-testsuiteUpgrade python3.11-full (Ubuntu Pro)Upgrade libpython3.8-minimal (Ubuntu Pro)Upgrade libpython3.6-stdlib (Ubuntu Pro)Upgrade python3.8-minimal (Ubuntu Pro)Upgrade python3.5-venv (Ubuntu Pro)Upgrade python3.13-minimalUpgrade libpython3.12-stdlibUpgrade python3.12-docUpgrade libpython3.10-minimalUpgrade python3.6-venv (Ubuntu Pro)Upgrade libpython3.4 (Ubuntu Pro)Upgrade libpython3.12-minimalUpgrade python3.12-devUpgrade python3.11-nopie (Ubuntu Pro)Upgrade python3.6-examples (Ubuntu Pro)Upgrade python3.14-docUpgrade libpython3.12-devUpgrade libpython3.9-dev (Ubuntu Pro)Upgrade libpython3.8-testsuite (Ubuntu Pro)Upgrade python3.4-minimal (Ubuntu Pro)Upgrade python3.13-examplesUpgrade python3.10-nopieUpgrade idle-python3.10Upgrade python3.5-minimal (Ubuntu Pro)Upgrade python3.5-examples (Ubuntu Pro)Upgrade python3.4-venv (Ubuntu Pro)Upgrade libpython3.7-stdlib (Ubuntu Pro)Upgrade libpython3.7-testsuite (Ubuntu Pro)Upgrade libpython3.14-devUpgrade python3.7-minimal (Ubuntu Pro)Upgrade python3.7-dev (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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