Vulnerability details
CVE-2025-8101
Linkify Linkify
Linkify 4.3.1 - Prototype Pollution & HTML Attribute Injection (XSS)
CVSS 4.0
8.8High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 4.0 | CVEProject cvelistV5 (CNA) (Fluid Attacks) | 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
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linkify | Linkify | 4.3.1 ≤ v < 4.3.2 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://fluidattacks.com/advisories/charly third-party-advisory
- https://github.com/nfrasser/linkifyjs product
- https://www.npmjs.com/package/linkifyjs product
- https://github.com/nfrasser/linkifyjs/releases/tag/v4.3.2 patch
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Details
- Published
- 2025-07-26
- Last updated
- 2025-12-04
- State
- Published
- Assigner (CNA)
- Fluid Attacks
Exploit prediction (EPSS)
0.6%
Probability of exploitation in 30 days
48.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')