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CVE-2026-3276: Inefficient Algorithmic Complexity

🗓️ 03 Jun 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7🔗 www.rapid7.com👁 5 Views

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

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb		CVE-2026-3276
3 Jun 202614:29
–attackerkb
nessus
Tenable Nessus		Amazon Linux 2023 : python3.13, python3.13-devel, python3.13-freethreading (ALAS2023-2026-1910)
16 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.14, python3.14-devel, python3.14-freethreading (ALAS2023-2026-1929)
16 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.11, python3.11-devel, python3.11-idle (ALAS2023-2026-1953)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3.12, python3.12-devel, python3.12-idle (ALAS2023-2026-1954)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		Amazon Linux 2023 : python3, python3-devel, python3-idle (ALAS2023-2026-1963)
20 Jul 202600:00
–nessus
nessus
Tenable Nessus		Fedora 43 : python3.11 (2026-22170bd5c0)
26 Aug 202600:00
–nessus
nessus
Tenable Nessus		Fedora 43 : python3.13 (2026-2deb979d80)
21 Jun 202600:00
–nessus
nessus
Tenable Nessus		Fedora 44 : python3.11 (2026-4d5b2df275)
26 Aug 202600:00
–nessus
nessus
Tenable Nessus		Fedora 43 : python3.12 (2026-7de2b1cfc5)
26 Aug 202600:00
–nessus
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13 Aug 2026 00:00Current
CVSS 46.3
EPSS0.00486
SSVC
CWE-407
5