CVE-2025-8101

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

CVSS 8.8 HIGHEPSS 0.5%CWE-1321

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.8EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

25 Jul 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Linkify · Linkify

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References

https://fluidattacks.com/advisories/charly https://github.com/nfrasser/linkifyjs https://github.com/nfrasser/linkifyjs/releases/tag/v4.3.2 https://www.npmjs.com/package/linkifyjs