CVE-2014-6420

MEDIUMNVD 6.16.1—Elevated

6.1

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.

CVSS v3: 6.1
EG Score: 6.1(medium)
EPSS: 75.7%
KEV: Not listed

Published

December 27, 2019

Last Modified

November 21, 2024

References (4)

cve@mitrehttp://packetstormsecurity.com/files/128293/Livefyre-LiveComments-3.0-Cross-Site-Scripting.html
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/96037
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/128293/Livefyre-LiveComments-3.0-Cross-Site-Scripting.html
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/96037

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-79Cross-site Scripting (XSS)

Data Freshness Timeline

(refreshed 9× in last 7d / 20× 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.

2026-06-08 14:14 UTCEPSS rescore
2026-06-07 15:22 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-06 13:45 UTCEPSS rescore
2026-06-05 22:44 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-04 13:09 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-02 20:10 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-06-01 13:49 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 22:28 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-31 00:14 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-34721
First seen Sep 20, 2014
Livefyre LiveComments Plugin - Persistent Cross-Site Scripting
Open source ↗

Frequently asked(5)

What is CVE-2014-6420?

CVE-2014-6420 is a medium vulnerability published on December 27, 2019. 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.

When was CVE-2014-6420 disclosed?

CVE-2014-6420 was first published in the National Vulnerability Database on December 27, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2014-6420 actively exploited?

CVE-2014-6420 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 75.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2014-6420?

CVE-2014-6420 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2014-6420?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-6420, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2014-6420

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2014-6420?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)