CVE-2026-93690 uri-js through 4.4.1 Denial of Service via removeDotSegments
Attackers can cause indefinite blocking and heap exhaustion in uri-js by triggering an infinite loop in removeDotSegments with specific Unicode separators.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93690?
CVE-2026-93690 is a high-severity denial of service vulnerability in garycourt uri-js, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-835
Which versions are affected by CVE-2026-93690?
How do I fix CVE-2026-93690?
No fix has been published for CVE-2026-93690 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-93690 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93690 exists.
Sources
Also known as AZL-103439, DEBIAN-CVE-2026-93690, GHSA-ffpj-9hx9-929p, UBUNTU-CVE-2026-93690.