CVE-2026-48125

UAParser.js is a JavaScript library to detect browsers, operating systems, CPUs, and devices from user-agent data. From 2.0.1 until 2.0.10, a regular expression denial-of-service vulnerability exists when using the Client Hints API. By sending a crafted Sec-CH-UA-Model header to an application that calls UAParser(headers).withClientHints(), an attacker can cause excessive CPU time due to catastrophic backtracking in the device regex because Client Hints values are copied without the UA_MAX_LENGTH limit used for User-Agent values. This issue is fixed in version 2.0.10.
Configurations

No configuration.

History

15 Jul 2026, 14:18

Type Values Removed Values Added
References () https://github.com/faisalman/ua-parser-js/security/advisories/GHSA-9h5v-pfqq-x599 - () https://github.com/faisalman/ua-parser-js/security/advisories/GHSA-9h5v-pfqq-x599 -

14 Jul 2026, 21:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-07-14 21:16

Updated : 2026-07-15 20:21


NVD link : CVE-2026-48125

Mitre link : CVE-2026-48125

CVE.ORG link : CVE-2026-48125


JSON object : View

Products Affected

No product.

CWE
CWE-400

Uncontrolled Resource Consumption

CWE-1333

Inefficient Regular Expression Complexity