Low severityNVD Advisory· Published Apr 22, 2026· Updated Apr 29, 2026
CVE-2026-6019
CVE-2026-6019
Description
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
6- github.com/python/cpython/commit/3c59b8b53fc75c7f9578d16fb8201ceb43e8f76cnvd
- github.com/python/cpython/commit/76b3923d688c0efc580658476c5f525ec8735104nvd
- github.com/python/cpython/commit/f795e042043dfe26c42e1971d4502c1cdc4c65b8nvd
- github.com/python/cpython/issues/90309nvd
- github.com/python/cpython/pull/148848nvd
- mail.python.org/archives/list/security-announce@python.org/thread/IVNWGV2BBNC3RHQAFS22UP4DY56SAXX3/nvd
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