---
id: CVE-2026-93690
title: >-
  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
summary: >-
  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 removeDot…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-835
vendor: garycourt
product: uri-js
affected:
  - uri-js <= 4.4.1
published: '2026-09-18'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:25:55.870'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93690'
references:
  - url: 'https://github.com/garycourt/uri-js'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/garycourt/uri-js/blob/4.4.0/src/uri.ts#L349'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/garycourt/uri-js/blob/4.4.0/src/uri.ts#L352-L376'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/garycourt/uri-js/issues/105'
    label: disclosure@vulncheck.com
  - url: 'https://www.npmjs.com/package/uri-js/v/4.4.1'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/uri-js-through-4.4.1-denial-of-service-via-removedotsegments
    label: disclosure@vulncheck.com
  - url: 'https://github.com/garycourt/uri-js/issues/105'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93690.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-93690'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2538611'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-93690'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93690'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
epss: 0.00684
epssPercentile: 0.50451
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-18T19:14:08.493965Z'
ingestedAt: '2026-09-18T15:44:31.586Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Cost Management On Premise, Multicluster Engine for Kubernetes, Node HealthCheck Operator, OpenShift Lightspeed, OpenShift Pipelines, OpenShift Service Mesh 3, … · no fix planned: Cost Management On Premise, Multicluster Engine for Kubernetes, Node HealthCheck Operator, OpenShift Lightspeed, … · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-93690.json)