Linkify 4.3.1 - Prototype Pollution & HTML Attribute Injection (XSS)
Priority LOW 39CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.006 48th percentileScored 2026-11-07
Fix Fixed Linkify (Linkify): 4.3.2linkifyjs (npm): 4.3.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linkify | Linkify | 4.3.1 to before 4.3.2 | 4.3.2 | Patch available | CNA |
| — | linkifyjs (npm) | 4.3.1 to before 4.3.2 | 4.3.2 | Patch available | GHSA-95jq-xph2-cx9h |
- Linkify VendorLinkify Affected 4.3.1 to before 4.3.2 Fixed in 4.3.2 Patch available CNA
- linkifyjs (npm) Vendor— Affected 4.3.1 to before 4.3.2 Fixed in 4.3.2 Patch available GHSA-95jq-xph2-cx9h
Remediation
- Fix · CNA Linkify (Linkify) Fixed in 4.3.2
- Fix · GHSA-95jq-xph2-cx9h linkifyjs (npm) Fixed in 4.3.2 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 2 products
- OpenShift Serverless
- Red Hat Developer Hub 1
Timeline
- 2026-10-02 Threatist record created from CVE-2025-8101
- 2026-10-03 Alias added: GHSA-95jq-xph2-cx9h
- 2026-10-27 Affected versions changed · Red Hat
References
Sources
- CVE-2025-8101 · CVE Program
- CVE-2025-8101 · NVD
- FIRST EPSS
- GHSA-95jq-xph2-cx9h · GitHub Advisory Database · CC BY 4.0
- CVE-2025-8101 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences