What’s Vulnerable › Vulnerabilities

CVE-2020-7747: Cross-site Scripting (XSS)

• Severity: low (CVSS 3.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-10-20 · updated 2026-06-17
• Weakness: CWE-79

Description

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

Affected products

• lightning-server: all versions

References

• https://github.com/lightning-viz/lightning/blob/master/app/controllers/session.js%23L230
• https://snyk.io/vuln/SNYK-JS-LIGHTNINGSERVER-1019381
• https://github.com/lightning-viz/lightning/blob/master/app/controllers/session.js
• https://github.com/lightning-viz/lightning/blob/master/app/controllers/session.js%23L230
• https://snyk.io/vuln/SNYK-JS-LIGHTNINGSERVER-1019381

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