What is CVE-2014-6420?

CVE-2014-6420 is a medium-severity vulnerability in Livefyre Livecomments, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-12-27.

How severe is CVE-2014-6420?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Livefyre Livecomments

CVE-2014-6420

Cross-site scripting (XSS) vulnerability in Livefyre LiveComments 3.0 allows remote attackers to inject arbitrary web script or HTML via the name of an uploaded picture.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-12-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.018 (77.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Livefyre Livecomments — versions 3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

packetstormsecurity.com/files/128293/Livefyre-LiveComments-3.0-Cross-Site-Scrip… (VDB Entry, Third Party Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/96037 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2014-6420?: CVE-2014-6420 is a medium-severity vulnerability in Livefyre Livecomments, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-12-27.
How severe is CVE-2014-6420?: Medium severity. CVSS v3 base score is 6.1 out of 10.