CVE intelligence

CVE-2026-3276

Vulnerability intelligence

Published Jun 3, 2026Sources checked Sep 28, 2026

6.3MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-3276 and is rated Medium severity with a CVSS score of 6.3. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

CISA KEVNot listedBased on the latest collected catalog

EPSS0.7%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-3276?

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.