http.cookies.Morsel.js_output() returns an inline <script> snippet and only escapes " for JavaScript string context. It does not neutralize the HTML parser-sensitive sequence </script> inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.
CVSS Details
- CVSS 4.0 Base Score: 2.1 (LOW)
- CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/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)
- CVSS 3.1 Base Score: 6.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade python3.14-idleUpgrade python3.14-freethreading-testUpgrade python3.14-freethreading-debugUpgrade python3.14-develUpgrade python3.14-libsUpgrade python3.14-freethreading-develUpgrade python3.14Upgrade python3.14-freethreadingUpgrade python3.14-freethreading-idleUpgrade python3.14-debugUpgrade python3.14-freethreading-libsUpgrade python3.14-tkinterUpgrade python3.14-freethreading-tkinterUpgrade python3.14-test | Jun 25, 2026 | Jun 23, 2026 |
| Amazon Linux Ami 2 | — | Upgrade python3-testUpgrade python-testUpgrade python3Upgrade tkinterUpgrade python3-debugUpgrade python-debugUpgrade python-develUpgrade python-debuginfoUpgrade pythonUpgrade python3-libsUpgrade python3-debuginfoUpgrade python3-tkinterUpgrade python3-toolsUpgrade python3-develUpgrade python-toolsUpgrade python-libs | Jun 23, 2026 | Jun 23, 2026 |
| Amazon_linux_2023 | — | Upgrade python3.13-tkinterUpgrade python3.9-debugsourceUpgrade python3.13-debugsourceUpgrade python3.9-debuginfoUpgrade python3.13-debugUpgrade python-unversioned-commandUpgrade python3-libsUpgrade python3.13-idleUpgrade python3.13-freethreading-debugUpgrade python3-tkinterUpgrade python3-develUpgrade python3.13-testUpgrade python3-idleUpgrade python3.13-develUpgrade python3.13-libsUpgrade python3-testUpgrade python3.13Upgrade python3Upgrade python3.13-freethreadingUpgrade python3.13-debuginfoUpgrade python3-debug | Jun 9, 2026 | Apr 22, 2026 |
| Debian | — | Upgrade python3.13 | Jul 23, 2026 | Jul 23, 2026 |
| Redhat_linux | — | Upgrade python3.14-freethreadingUpgrade python3.14-freethreading-testUpgrade python3.14-freethreading-idleUpgrade python3.14-debuginfoUpgrade python3.14-debugUpgrade python3.14-debugsourceUpgrade python3.14-freethreading-tkinterUpgrade python3.14-freethreading-libsUpgrade python3.14-testNo solution existsUpgrade python3.14-freethreading-develUpgrade python3.14Upgrade python3.14-libsUpgrade python3.14-develUpgrade python3.14-freethreading-debugUpgrade python3.14-idleUpgrade python3.14-tkinter | Jun 25, 2026 | Apr 22, 2026 |
| Rocky_linux | — | Upgrade python3.14-freethreading-libsUpgrade python3.14-debuginfoUpgrade python3.14-freethreading-testUpgrade python3.14-debugsourceUpgrade python3.14-tkinterUpgrade python3.14-testUpgrade python3.14-freethreadingUpgrade python3.14-debugUpgrade python3.14-freethreading-idleUpgrade python3.14-develUpgrade python3.14-idleUpgrade python3.14-libsUpgrade python3.14-freethreading-develUpgrade python3.14-freethreading-tkinterUpgrade python3.14-freethreading-debugUpgrade python3.14 | Jun 29, 2026 | Jun 27, 2026 |
| Ubuntu | — | Upgrade python3.5 (Ubuntu Pro)Upgrade libpython3.12t64Upgrade libpython3.7 (Ubuntu Pro)Upgrade python3.10Upgrade libpython3.6 (Ubuntu Pro)Upgrade libpython3.14Upgrade python2.7 (Ubuntu Pro)Upgrade python3.9 (Ubuntu Pro)Upgrade libpython3.4 (Ubuntu Pro)Upgrade python3.14Upgrade libpython3.10Upgrade libpython3.5 (Ubuntu Pro)Upgrade python3.7 (Ubuntu Pro)Upgrade python3.12Upgrade python3.8 (Ubuntu Pro)Upgrade libpython3.11 (Ubuntu Pro)Upgrade libpython3.8 (Ubuntu Pro)Upgrade libpython3.9 (Ubuntu Pro)Upgrade python3.4 (Ubuntu Pro)Upgrade python3.11 (Ubuntu Pro)Upgrade python3.6 (Ubuntu Pro)Upgrade libpython2.7 (Ubuntu Pro) | Jul 6, 2026 | Apr 22, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jun 5, 2026 | Apr 22, 2026 |
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