Servers and applications
CVE-2026-6019
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.
- Severity
- Low 2.1
- Published
- 22 Apr 2026
- Last changed
- 27 Jul 2026
- Added to UpHeron
- 21 Oct 2026
- Fixed in
- 3.13.14
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
PythonServers and applications · cpe:a:python:python |
All 10 release lines
|