CVE-2026-3644mediumCWE-116CWE-20

CVE-2026-3644: fallo de gravedad media en Python Software Foundation CPython

Incomplete control character validation in http.cookies

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear CPython+ Monitorear python3

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6epss 0.5%
The fix for CVE-2026-0672, which rejected control characters in http.cookies.Morsel, was incomplete. The Morsel.update(), |= operator, and unpickling paths were not patched, allowing control characters to bypass input validation. Additionally, BaseCookie.js_output() lacked the output validation applied to BaseCookie.output().
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
Productos afectados
Python Software Foundation · CPython
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