Denial of Service in uri-js <=4.4.1 removeDotSegments Unicode separator loop
CVE-2026-93690 Published on September 18, 2026
uri-js through 4.4.1 Denial of Service via removeDotSegments
uri-js through 4.4.1 contains a denial of service vulnerability in the removeDotSegments function that loops infinitely when a path segment begins with Unicode line or paragraph separators. Attackers can trigger this by calling removeDotSegments directly or through normalize/resolve functions with IRI handling enabled, causing the Node.js event loop to block indefinitely until heap exhaustion.
Vulnerability Analysis
CVE-2026-93690 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. An automatable proof of concept (POC) exploit exists. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is an Infinite Loop Vulnerability?
The program contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. If the loop can be influenced by an attacker, this weakness could allow attackers to consume excessive resources such as CPU or memory.
CVE-2026-93690 has been classified to as an Infinite Loop vulnerability or weakness.
Products Associated with CVE-2026-93690
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Affected Versions
garycourt uri-js:- Before and including 4.4.1 is affected.