CVE-2025-57323

HIGH

mpregular < 0.2.0 - Prototype Pollution via mp.addEventHandler

Title source: llm
STIX 2.1

Description

mpregular is a package that provides a small program development framework based on RegularJS. A Prototype Pollution vulnerability in the mp.addEventHandler function of mpregular version 0.2.0 and before allows attackers to inject properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0038
EPSS Percentile 29.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-1321
Status published
Products (2)
npm/mpregular 0npm
regularjs/mpregular < 0.2.0
Published Sep 24, 2025
Tracked Since Feb 18, 2026