{"cve":"CVE-2020-7747","nvd":{"published":"2020-10-20T11:15:12.487","modified":"2026-06-17T03:25:22.433","status":"Modified","description":"This affects all versions of package lightning-server. It is possible to inject malicious JavaScript code as part of a session controller.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","score":6.3},"cwes":["CWE-79"],"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"],"products":["lightning-viz:lightning"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-7747","score":0.0086,"percentile":0.58531,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-gmch-cm2p-9qw9","url":"https://osv.dev/vulnerability/GHSA-gmch-cm2p-9qw9","summary":"Cross-site Scripting in lightning-server","modified":"2026-03-14T06:57:14.621277Z","packages":[{"ecosystem":"npm","name":"lightning-server","purl":"pkg:npm/lightning-server","ranges":["<=1.3.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}