What is the CVSS score of CVE-2020-7747?

CVE-2020-7747 has a CVSS 3.1 base score of 6.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N. EPSS exploitation probability: 0.9%.

Is there a public PoC exploit available for CVE-2020-7747?

Yes, a public proof-of-concept exploit is available for CVE-2020-7747. Prioritise patching immediately. EPSS: 0.9%.

Lightning CVE-2020-7747

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2020-10-20 report@snyk.io

XSS Lightning

6.3

CVSS 3.1 · Vendor: snyk

Severity by source

Vendor (snyk) PRIMARY

6.3 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Primary rating from Vendor (snyk) · only source for this CVE.

CVSS VectorVendor: snyk

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Oct 20, 2020 - 11:15 cve.org

MEDIUM 6.3

DescriptionCVE.org

This affects all versions of package lightning-server. It is possible to inject malicious JavaScript code as part of a session controller.

AnalysisAI

This affects all versions of package lightning-server. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. This affects all versions of package lightning-server. It is possible to inject malicious JavaScript code as part of a session controller. Affected products include: Lightning-Viz Lightning.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.