BIT-libpython-2026-3276

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/libpython/BIT-libpython-2026-3276.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-libpython-2026-3276
Aliases
Published
2026-06-05T12:56:59.092Z
Modified
2026-08-19T09:45:16.991263274Z
Summary
Potential DoS via quadratic complexity in unicodedata.normalize()
Details

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.

Database specific 
{
    "severity": "Medium",
    "cpes": [
        "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"
    ]
}
References

Affected packages

Bitnami / libpython

Package

Name
libpython
Purl
pkg:bitnami/libpython

Severity

  • 6.3 (Medium) CVSS_V4 - 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 CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.10.21
Introduced
3.11.0
Fixed
3.11.16
Introduced
3.12.0
Fixed
3.12.14
Introduced
3.13.0
Fixed
3.13.14
Introduced
3.14.0
Fixed
3.14.6

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/libpython/BIT-libpython-2026-3276.json"