CVE-2026-6019

Description

http.cookies.Morsel.js_output() returns an inline inside the generated script element. Mitigation base64-encodes the cookie value to disallow escaping using cookie value.

Affected Platforms

Weakness Type

CWE-150, CWE-116

References

• https://github.com/python/cpython/commit/3c59b8b53fc75c7f9578d16fb8201ceb43e8f76…
• https://github.com/python/cpython/commit/76b3923d688c0efc580658476c5f525ec873510…
• https://github.com/python/cpython/commit/f795e042043dfe26c42e1971d4502c1cdc4c65b…
• https://github.com/python/cpython/issues/90309
• https://github.com/python/cpython/pull/148848
• https://mail.python.org/archives/list/[email protected]/thread/IVNWGV…