CVE-2026-3276
Last modified
CVE-2026-3276 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Python Software Foundation | CPython | < 3.13.14; >= 3.14.0, < 3.14.6; >= 3.15.0a1, < 3.15.0b2 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-3276?
How severe is CVE-2026-3276?
How do I fix CVE-2026-3276?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-32754FreeScout is a free help desk and shared inbox built with PH…9.3
- CVE-2026-32755Admidio is an open-source user management solution. In versi…5.7
- CVE-2026-32756Admidio is an open-source user management solution. Versions…8.8
- CVE-2026-32757Admidio is an open-source user management solution. In versi…5.4
- CVE-2026-32758File Browser is a file managing interface for uploading, del…6.5
- CVE-2026-32759File Browser is a file managing interface for uploading, del…8.1
- CVE-2026-32760File Browser is a file managing interface for uploading, del…9.8
- CVE-2026-32761File Browser is a file managing interface for uploading, del…6.5
- CVE-2026-32762Rack is a modular Ruby web server interface. From versions 3…6.5
- CVE-2026-32763Kysely is a type-safe TypeScript SQL query builder. Versions…8.2
- CVE-2026-32764Rejected reason: This repository is no longer public.
- CVE-2026-32765Rejected reason: This repository is no longer public.
Are you affected by CVE-2026-3276?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST