CVE-2025-8101 HIGH

CVE-2025-8101: Linkify 4.3.1 - Prototype Pollution & HTML Attribute Injection (XSS)

Vendor Linkify
Product Linkify
Weakness CWE-1321
Published July 25, 2025
Last update December 3, 2025
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') vulnerability in Linkify (linkifyjs) allows XSS Targeting HTML Attributes and Manipulating User-Controlled Variables.This issue affects Linkify: from 4.3.1 before 4.3.2.

Key dates

02Disclosure timeline

July 25, 2025 CVE published
December 3, 2025 Record updated