CVE-2026-3644

Sažetak

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().

Reference

https://github.com/python/cpython/commit/57e88c1cf95e1481b94ae57abe1010469d47a6b4
https://github.com/python/cpython/commit/62ceb396fcbe69da1ded3702de586f4072b590dd
https://github.com/python/cpython/commit/d16ecc6c3626f0e2cc8f08c309c83934e8a979dd
https://github.com/python/cpython/issues/145599
https://github.com/python/cpython/pull/145600
https://mail.python.org/archives/list/security-announce@python.org/thread/H6CADMBCDRFGWCMOXWUIHFJNV43GABJ7/

CVSS

Base:	7.5
Impact:	3.6
Exploitability:	3.9

Pristup

Vektor	Složenost	Autentikacija
NETWORK	LOW	NONE

Impact

Povjerljivost	Cjelovitost	Dostupnost
NONE	HIGH	NONE

CVSS vektor

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Zadnje važnije ažuriranje

04-06-2026 - 19:30

Objavljeno

16-03-2026 - 18:16