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CVE-2026-6019
MEDIUM(6.1)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Risk Signal Score15/100 — NIEDRIG
- CVSS 6.1 — Mittel
EPSS-Score
0%
Exploit-Wahrscheinlichkeit (30 Tage)
CVSS Score
6.1
Technische Schwere
Beschreibung
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.
Referenzen
- 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/security-announce@python.org/thread/IVNWGV...