CVE-2025-8101CWE-1321

Linkify 4.3.1 - Prototype Pollution & HTML Attribute Injection (XSS)

High · published July 25, 2025

CVSS v4.0
8.8
EPSS
1%
Percentile
45.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.8 · HIGH
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
EPSS
0.00558 · 45.7th percentile
Weakness
CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Published
2025-07-25T21:52Z
EPSS history
Timeline
  • 25 JUL 21:52Z
    Linkify 4.3.1 - Prototype Pollution & HTML Attribute Injection (XSS)
    cvelistv5