7.5High
CVE-2026-93690
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.
What this means for your business
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- CVSS v4
- 8.7
- Weakness
- CWE-835
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-09-18
- Last modified
- 2026-09-18
- Sources
- NVD
References
- https://github.com/garycourt/uri-js
- https://github.com/garycourt/uri-js/blob/4.4.0/src/uri.ts#L349
- https://github.com/garycourt/uri-js/blob/4.4.0/src/uri.ts#L352-L376
- https://github.com/garycourt/uri-js/issues/105
- https://www.npmjs.com/package/uri-js/v/4.4.1
- https://www.vulncheck.com/advisories/uri-js-through-4.4.1-denial-of-service-via-removedotsegments
- https://github.com/garycourt/uri-js/issues/105