CVE-2025-8101

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

Published Jul 25, 2025 CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-22758 Linkify Allows Prototype Pollution & HTML Attribute Injection (XSS)
Github GHSA Github GHSA GHSA-95jq-xph2-cx9h Linkify Allows Prototype Pollution & HTML Attribute Injection (XSS)
History
Type Values Removed Values Added
CPEs cpe:2.3:a:linkify:linkify:*:*:*:*:*:*:*:*
Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L'}

threat_severity

Important

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Linkify
Linkify linkify
Vendors & Products Linkify
Linkify linkify
Type Values Removed Values Added
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.
Title Linkify 4.3.1 - Prototype Pollution & HTML Attribute Injection (XSS)
Weaknesses CWE-1321
References
Metrics cvssV4_0

{'score': 8.8, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Fluid Attacks
Published
Updated
Dec 3, 2025, 9:04 PM
Reserved
Jul 23, 2025, 8:18 PM
Status
Deferred
Published
Jul 25, 2025, 10:15 PM
Modified
Jun 17, 2026, 10:06 AM
Severity
Important
Public date
Jul 25, 2025, 9:52 PM