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.
CVE-2025-8101
This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 60% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.8
- EG Score
- 8.8(medium)
- EG Risk
- 40(Track)EG Risk 40/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity88% × 45%Exploitation1% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 42%
- KEV
- Not listed
Published
July 25, 2025
Last Modified
June 17, 2026
Advisory Details (3)
Auto-updated Aug 13, 2026v4.3.2
Patch available: nfrasser/linkifyjs v4.3.2
https://github.com/nfrasser/linkifyjs/releases/tag/v4.3.2GitHub - nfrasser/linkifyjs: JavaScript plugin for finding links in plain-text and converting them to HTML <a> tags. · GitHub
https://github.com/nfrasser/linkifyjsVendor Advisories for CVE-2025-8101(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| linkifyjs | 4.3.1 | 4.3.2 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 6× in last 7d / 26× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 173 total refreshes for this CVE.
- 2026-09-18 19:27 UTCEPSS rescore
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- 2026-06-26 04:46 UTCOSV refresh
- 2026-06-25 13:49 UTCEPSS rescore
Related CVEs(same CWE)
Same CWE
10 shownCWE-1321
- CVE-2020-12079EG 10.0CRITICAL
- CVE-2011-10019EG 9.8EPSS p90CRITICAL
- CVE-2020-28462NVD 7.3EG 9.8CRITICAL
- CVE-2020-28276EG 9.8CRITICAL
- CVE-2020-28271EG 9.8CRITICAL
- CVE-2020-28270EG 9.8EPSS p90CRITICAL
- CVE-2020-28269EG 9.8EPSS p90CRITICAL
- CVE-2020-8158EG 9.8CRITICAL
- CVE-2019-0230EG 9.8EPSS p100CRITICAL
- CVE-2020-7727EG 9.8CRITICAL
Frequently asked(5)
What is CVE-2025-8101?
When was CVE-2025-8101 disclosed?
Is CVE-2025-8101 actively exploited?
What is the CVSS score of CVE-2025-8101?
How do I remediate CVE-2025-8101?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-8101
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