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High severity7.5NVD Advisory· Published Jul 7, 2024· Updated Jun 17, 2026

CVE-2024-3651

CVE-2024-3651

Description

A vulnerability was identified in the kjd/idna library, specifically within the idna.encode() function, affecting version 3.6. The issue arises from the function's handling of crafted input strings, which can lead to quadratic complexity and consequently, a denial of service condition. This vulnerability is triggered by a crafted input that causes the idna.encode() function to process the input with considerable computational load, significantly increasing the processing time in a quadratic manner relative to the input size.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
idnaPyPI
< 3.73.7

Affected products

292

Patches

Vulnerability mechanics

References

15

News mentions

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