{"cve":"CVE-2020-26296","nvd":{"published":"2020-12-30T23:15:15.233","modified":"2026-06-17T03:08:01.340","status":"Modified","description":"Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. Vega in an npm package. In Vega before version 5.17.3 there is an XSS vulnerability in Vega expressions. Through a specially crafted Vega expression, an attacker could execute arbitrary javascript on a victim's machine. This is fixed in version 5.17.3","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","score":8.7},"cwes":["CWE-79"],"references":["https://github.com/vega/vega/issues/3018","https://github.com/vega/vega/pull/3019","https://github.com/vega/vega/releases/tag/v5.17.3","https://github.com/vega/vega/security/advisories/GHSA-r2qc-w64x-6j54","https://www.npmjs.com/package/vega"],"products":["vega_project:vega"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-26296","score":0.01713,"percentile":0.7739,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r2qc-w64x-6j54","url":"https://osv.dev/vulnerability/GHSA-r2qc-w64x-6j54","summary":"XSS in Vega","modified":"2026-09-10T03:49:13.774922778Z","packages":[{"ecosystem":"npm","name":"vega","purl":"pkg:npm/vega","ranges":["<5.17.3"],"fixed":["5.17.3"]}]}],"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."]}