CVE-2024-3651

CVE-2024-3651 is a high-severity vulnerability in Kjd Internationalized Domain Names In Applications with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.

Key facts

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.

Frequently asked questions

What is CVE-2024-3651?
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.
How severe is CVE-2024-3651?
CVE-2024-3651 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-3651 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-3651?
CVE-2024-3651 affects Kjd Internationalized Domain Names In Applications. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-3651?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-3651 have an EU (EUVD) identifier?
Yes. CVE-2024-3651 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0077.
When was CVE-2024-3651 published?
CVE-2024-3651 was published on 2024-07-07 and last updated on 2026-06-17.

References

Affected products (1)

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