When folding a long comment in an email header containing exclusively unfoldable characters, the parenthesis would not be preserved. This could be used for injecting headers into email messages where addresses are user-controlled and not sanitized.
CVSS Details
- CVSS 4.0 Base Score: 5.7 (MEDIUM)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/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 |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-develUpgrade python-libsUpgrade tkinterUpgrade python-testUpgrade python3-debugUpgrade python-debugUpgrade python3-tkinterUpgrade python3-testUpgrade python3-toolsUpgrade pythonUpgrade python3-develUpgrade python-toolsUpgrade python3-libsUpgrade python3-debuginfoUpgrade python3Upgrade python-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3.11-testUpgrade python3.13-debuginfoUpgrade python3.11-debugsourceUpgrade python3.13-libsUpgrade python3.12-idleUpgrade python3.13-idleUpgrade python3.11-idleUpgrade python3Upgrade python3.12-develUpgrade python3.13-freethreading-debugUpgrade python-unversioned-commandUpgrade python3.13-testUpgrade python3.11-tkinterUpgrade python3.9-debugsourceUpgrade python3.13-freethreadingUpgrade python3.11-libsUpgrade python3.11-debuginfoUpgrade python3.13-tkinterUpgrade python3.12-debugsourceUpgrade python3.12-debugUpgrade python3.13-debugUpgrade python3.12-libsUpgrade python3.12-testUpgrade python3.13-develUpgrade python3-tkinterUpgrade python3-libsUpgrade python3.13Upgrade python3.12-tkinterUpgrade python3.11-develUpgrade python3-debugUpgrade python3.13-debugsourceUpgrade python3.11-debugUpgrade python3-develUpgrade python3.12-debuginfoUpgrade python3.12Upgrade python3.11Upgrade python3-testUpgrade python3-idleUpgrade python3.9-debuginfo | Feb 20, 2026 | Jan 20, 2026 |
| Debian | — | Upgrade python3.9Upgrade python3.11Upgrade python3.13 | Jan 27, 2026 | Jan 27, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jan 20, 2026 |
| Ubuntu | — | Upgrade libpython3.14Upgrade libpython3.13-devUpgrade python3.10-examplesUpgrade libpython3.10-stdlibUpgrade python3.10-docUpgrade libpython3.7-testsuite (Ubuntu Pro)Upgrade libpython3.9 (Ubuntu Pro)Upgrade python3.6-venv (Ubuntu Pro)Upgrade libpython3.7-minimal (Ubuntu Pro)Upgrade libpython3.12t64Upgrade python3.11-full (Ubuntu Pro)Upgrade python3.13-tkUpgrade python3.8-examples (Ubuntu Pro)Upgrade libpython3.8 (Ubuntu Pro)Upgrade python3.10-nopieUpgrade idle-python3.5 (Ubuntu Pro)Upgrade python3.10-minimalUpgrade python3.13-examplesUpgrade python3.4-minimal (Ubuntu Pro)Upgrade python3.5-minimal (Ubuntu Pro)Upgrade python3.13-venvUpgrade python3.11-venv (Ubuntu Pro)Upgrade idle-python3.10Upgrade libpython3.8-stdlib (Ubuntu Pro)Upgrade libpython3.12-stdlibUpgrade libpython3.8-dev (Ubuntu Pro)Upgrade libpython3.5-stdlib (Ubuntu Pro)Upgrade python3.10Upgrade python3.5-venv (Ubuntu Pro)Upgrade libpython3.12-devUpgrade python3.13-nopieUpgrade idle-python3.8 (Ubuntu Pro)Upgrade idle-python3.14Upgrade python3.13-gdbmUpgrade idle-python3.11 (Ubuntu Pro)Upgrade python3.9-dev (Ubuntu Pro)Upgrade python3.5-doc (Ubuntu Pro)Upgrade python3.7-venv (Ubuntu Pro)Upgrade libpython3.10-devUpgrade python3.9-venv (Ubuntu Pro)Upgrade python3.11-minimal (Ubuntu Pro)Upgrade python3.7-dev (Ubuntu Pro)Upgrade libpython3.7 (Ubuntu Pro)Upgrade libpython3.14-testsuiteUpgrade libpython3.11-dev (Ubuntu Pro)Upgrade libpython3.14-minimalUpgrade libpython3.7-dev (Ubuntu Pro)Upgrade idle-python3.12Upgrade python3.7-minimal (Ubuntu Pro)Upgrade idle-python3.13Upgrade python3.11-dev (Ubuntu Pro)Upgrade libpython3.6-minimal (Ubuntu Pro)Upgrade python3.13-minimalUpgrade python3.7-examples (Ubuntu Pro)Upgrade python3.14-examplesUpgrade python3.9-examples (Ubuntu Pro)Upgrade python3.9-doc (Ubuntu Pro)Upgrade python3.13-fullUpgrade python3.6-doc (Ubuntu Pro)Upgrade python3.14-venvUpgrade libpython3.10Upgrade libpython3.4 (Ubuntu Pro)Upgrade python3.12-minimalUpgrade python3.6-examples (Ubuntu Pro)Upgrade python3.12-devUpgrade libpython3.6-testsuite (Ubuntu Pro)Upgrade libpython3.5-minimal (Ubuntu Pro)Upgrade libpython3.9-testsuite (Ubuntu Pro)Upgrade libpython3.11 (Ubuntu Pro)Upgrade python3.11-nopie (Ubuntu Pro)Upgrade python3.8-full (Ubuntu Pro)Upgrade libpython3.10-minimalUpgrade libpython3.12-testsuiteUpgrade python3.4-examples (Ubuntu Pro)Upgrade python3.12Upgrade python3.6-minimal (Ubuntu Pro)Upgrade libpython3.4-stdlib (Ubuntu Pro)Upgrade python3.6 (Ubuntu Pro)Upgrade libpython3.6-stdlib (Ubuntu Pro)Upgrade python3.4 (Ubuntu Pro)Upgrade libpython3.4-dev (Ubuntu Pro)Upgrade python3.14-nopieUpgrade python3.13-devUpgrade libpython3.13Upgrade python3.8 (Ubuntu Pro)Upgrade idle-python3.4 (Ubuntu Pro)Upgrade python3.7-doc (Ubuntu Pro)Upgrade libpython3.7-stdlib (Ubuntu Pro)Upgrade python3.5-examples (Ubuntu Pro)Upgrade python3.9 (Ubuntu Pro)Upgrade idle-python3.9 (Ubuntu Pro)Upgrade python3.12-docUpgrade python3.6-dev (Ubuntu Pro)Upgrade python3.14Upgrade libpython3.9-dev (Ubuntu Pro)Upgrade idle-python3.6 (Ubuntu Pro)Upgrade python3.11 (Ubuntu Pro)Upgrade python3.11-examples (Ubuntu Pro)Upgrade python3.12-venvUpgrade python3.14-gdbmUpgrade libpython3.14-stdlibUpgrade libpython3.14-devUpgrade libpython3.6 (Ubuntu Pro)Upgrade libpython3.8-testsuite (Ubuntu Pro)Upgrade libpython3.13-testsuiteUpgrade python3.5 (Ubuntu Pro)Upgrade python3.13Upgrade python3.10-venvUpgrade libpython3.9-minimal (Ubuntu Pro)Upgrade python3.4-doc (Ubuntu Pro)Upgrade python3.9-full (Ubuntu Pro)Upgrade python3.9-minimal (Ubuntu Pro)Upgrade libpython3.12-minimalUpgrade libpython3.4-testsuite (Ubuntu Pro)Upgrade python3.8-venv (Ubuntu Pro)Upgrade libpython3.13-stdlibUpgrade python3.8-minimal (Ubuntu Pro)Upgrade python3.7 (Ubuntu Pro)Upgrade libpython3.6-dev (Ubuntu Pro)Upgrade python3.12-nopieUpgrade python3.10-fullUpgrade python3.14-devUpgrade libpython3.13-minimalUpgrade python3.14-tkUpgrade python3.8-dev (Ubuntu Pro)Upgrade idle-python3.7 (Ubuntu Pro)Upgrade libpython3.5 (Ubuntu Pro)Upgrade python3.8-doc (Ubuntu Pro)Upgrade python3.13-docUpgrade python3.10-devUpgrade python3.4-venv (Ubuntu Pro)Upgrade python3.14-minimalUpgrade python3.14-docUpgrade python3.14-fullUpgrade libpython3.5-dev (Ubuntu Pro)Upgrade libpython3.5-testsuite (Ubuntu Pro)Upgrade libpython3.11-stdlib (Ubuntu Pro)Upgrade libpython3.11-minimal (Ubuntu Pro)Upgrade python3.11-doc (Ubuntu Pro)Upgrade libpython3.4-minimal (Ubuntu Pro)Upgrade libpython3.9-stdlib (Ubuntu Pro)Upgrade libpython3.8-minimal (Ubuntu Pro)Upgrade python3.12-examplesUpgrade python3.4-dev (Ubuntu Pro)Upgrade libpython3.11-testsuite (Ubuntu Pro)Upgrade python3.5-dev (Ubuntu Pro)Upgrade python3.12-fullUpgrade libpython3.10-testsuite | 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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