PT-2025-30937 · Linkify · Linkify

Camilo Vera · CVE-2025-8101 · Published 2025-07-25 · Updated 2026-06-04

Positive Technologies (AI Summary)

CVSS v4.0

8.8

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions Linkify versions 4.3.1 through 4.3.2

Description The software contains an improperly controlled modification of object prototype attributes ('Prototype Pollution') issue. This can lead to cross-site scripting (XSS) attacks targeting HTML attributes and manipulation of user-controlled variables.

Recommendations Update to a version later than 4.3.2.

Exploit

Fix

Prototype Pollution

Weakness Enumeration

CWE-1321

Related Identifiers

CVE-2025-8101

GHSA-95JQ-XPH2-CX9H

Affected Products

Linkify

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/8xxx/CVE-2025-8101.json · Exploit
• https://github.com/nfrasser/linkifyjs/releases/tag/v4.3.2 · Patch
• https://osv.dev/vulnerability/GHSA-95jq-xph2-cx9h · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-8101 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-8101 · Security Note
• https://osv.dev/vulnerability/ROOT-APP-NPM-CVE-2025-8101 · Vendor Advisory
• https://github.com/nfrasser/linkifyjs/commit/931d3e28b68951b8f898ea4d6504696346b485b0 · Note
• https://github.com/nfrasser/linkifyjs · Note
• https://twitter.com/CVEnew/status/1948871383808979158 · Twitter Post
• https://caverav.cl/posts/linkify-xss/linkify-xss · Note
• https://twitter.com/fluidattacks/status/1957942907064742023 · Twitter Post
• https://twitter.com/CveFindCom/status/1948868446982127630 · Twitter Post
• https://registry.npmjs.org · Note
• https://npmjs.com/package/linkifyjs · Note
• https://fluidattacks.com/advisories/charly · Note