CVE-2026-3276 Affecting python3.10 package, versions <3.10.12-1~22.04.16


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-UBUNTU2204-PYTHON310-17156947
  • published6 Jul 2026
  • disclosed3 Jun 2026

Introduced: 3 Jun 2026

CVE-2026-3276  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 python3.10 to version 3.10.12-1~22.04.16 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.10 package and not the python3.10 package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1