CVE-2026-3276

Sažetak

unicodedata.normalize() can take excessive CPU time when processing specially crafted Unicode input containing long runs of combining characters with alternating Canonical Combining Class values. This affects all normalization forms.

Reference

https://github.com/python/cpython/commit/6b505d1f41f8f3ea0fe5a4786d3a8fff1875cfc0
https://github.com/python/cpython/commit/90748760d38ca3ac5fc6788a69becab905c95598
https://github.com/python/cpython/commit/991224b1e8311c85f198f6dd8208bf8cff7fc26f
https://github.com/python/cpython/commit/ba785b88add96acbf403d65cb157fb2743a33a32
https://github.com/python/cpython/commit/c5512bd7c1dc28055660565275012766941d3066
https://github.com/python/cpython/commit/d3ab945af25b28dfe13ac6cb40c124a01b33ce1f
https://github.com/python/cpython/commit/db744c0776c1d5dd11aaa70eff2a6993c408bacc
https://github.com/python/cpython/commit/e322a1857084d521f79f45181b776f62e6acfc2c
https://github.com/python/cpython/issues/149079
https://github.com/python/cpython/pull/149080
https://mail.python.org/archives/list/security-announce@python.org/thread/PP5HB4K7727OBBM76KA2ILID76K3OZGZ/
http://www.openwall.com/lists/oss-security/2026/06/03/15

CVSS

Base:	0.0
Impact:	None
Exploitability:	None

Pristup

Vektor	Složenost	Autentikacija
None	None	None

Impact

Povjerljivost	Cjelovitost	Dostupnost
None	None	None

CVSS vektor

None

Zadnje važnije ažuriranje

11-08-2026 - 01:17

Objavljeno

03-06-2026 - 16:16