CVE-2024-3651 – Denial of Service via Quadratic Complexity in kjd/idna

https://notcve.org/view.php?id=CVE-2024-3651

26 Apr 2024 — 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 relat... • https://github.com/kjd/idna/commit/1d365e17e10d72d0b7876316fc7b9ca0eebdd38d • CWE-400: Uncontrolled Resource Consumption •