CVE-2026-3276
Public on 2026-06-03
Modified on 2026-06-05
Description
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 v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | python | Pending Fix | ||
| Amazon Linux 2 - Core | python3 | Pending Fix | ||
| Amazon Linux 2023 | python3.11 | Pending Fix | ||
| Amazon Linux 2023 | python3.12 | Pending Fix | ||
| Amazon Linux 2023 | python3.13 | Pending Fix | ||
| Amazon Linux 2023 | python3.14 | Pending Fix | ||
| Amazon Linux 2023 | python3.9 | Pending Fix |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |