CVE-2026-3276 Affecting python3.11 package, versions <3.11.2-6+deb12u9


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-ECHOLATEST-PYTHON311-18307064
  • published25 Jul 2026
  • disclosed3 Jun 2026

Introduced: 3 Jun 2026

CVE-2026-3276  (opens in a new tab)

How to fix?

Upgrade Echo:latest python3.11 to version 3.11.2-6+deb12u9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.11 package and not the python3.11 package as distributed by Echo. See How to fix? for Echo:latest 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