Linkify Allows Prototype Pollution & HTML Attribute Injection (XSS)

Description

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.

Recommendation

Update the linkifyjs package to the latest compatible version. Followings are version details:

• Affected version(s): < 4.3.2
• Patched version(s): 4.3.2

References

• GHSA-95jq-xph2-cx9h
• fluidattacks.com
• www.npmjs.com
• caverav.cl
• CVE-2025-8101
• CWE-1321
• CAPEC-310
• OWASP 2021-A6

Related Issues

• tarteaucitron.js allows prototype pollution via custom text injection - CVE-2025-31475
• Vue I18n Allows Prototype Pollution in `handleFlatJson` (GHSA-p2ph-7g93-hw3m) 3 - CVE-2025-27597
• Vue I18n Allows Prototype Pollution in `handleFlatJson` (GHSA-p2ph-7g93-hw3m) 4 - CVE-2025-27597
• billboard.js allows prototype pollution via the function generate - CVE-2025-49223

Tags:

npm

linkifyjs