Secuno
ENNL
Book demo

CVE-2024-3651

Kjd Internationalized Domain Names In Applications vulnerability

7.5 HIGHPublic exploitEPSS 1.39%
  1. Published7 Jul 2024

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Kjd Internationalized Domain Names In Applications≥ 0.2 < 3.7

Remediation

Fixed in
Kjd Internationalized Domain Names In Applications≥ 3.7

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-826179.8
The two built-in name-finder patterns exposed by…
CVE-2026-527789.8
YesWiki is a wiki system written in PHP. Prior to version 4.6.6, an unsafe execution…
CVE-2026-354589.8
Gotenberg is an API for converting document formats. In 8.29.1 and earlier, Gotenberg…
CVE-2025-624848.1
Inefficient regular expression complexity in certain Zoom Workplace Clients before…

Frequently asked

Is CVE-2024-3651 being actively exploited?

CVE-2024-3651 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.39%.

How severe is CVE-2024-3651?

CVE-2024-3651 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 1.39% probability of exploitation.

Which products are affected by CVE-2024-3651?

Affected products include Kjd Internationalized Domain Names In Applications.

How do I fix CVE-2024-3651?

Upgrade affected software to a fixed version, for example Kjd Internationalized Domain Names In Applications 3.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-3651 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.