Denial of Service Vulnerability in uri-js by Gary Court
CVE-2026-93690

8.7HIGH

Key Information:

Vendor

Garycourt

Status
Uri-js
Vendor
CVE Published:
18 September 2026

What is CVE-2026-93690?

The uri-js library versions up to 4.4.1 contain a denial of service vulnerability in the removeDotSegments function. This vulnerability arises when a path segment starts with Unicode line or paragraph separators, leading the function to enter an infinite loop. Attackers can exploit this by invoking removeDotSegments directly or through related functions that enable IRI handling, resulting in the blockage of the Node.js event loop which can eventually lead to heap exhaustion. This makes affected applications highly susceptible to service disruptions. It is crucial for developers using uri-js to update to the latest version and review their implementations for any potential exposure.

Affected Version(s)

uri-js 0 <= 4.4.1

References

https://github.com/garycourt/uri-js/issues/105
issue-tracking
https://github.com/garycourt/uri-js
product
https://github.com/garycourt/uri-js/blob/4.4.0/src/uri.ts...
technical-description

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Wayde Shi (PayPal Cyber Security Team)
.