Back to Database
Status published
High
CVE-2020-26296
XSS in Vega
Vulnerability 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
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-26296
Credits & Attribution
No credits recorded in the NVD database.
References
More from vega
View All →CVE-2025-66648
`vega-functions` vulnerable to Cross-site Scripting via `setdata` function
High
7.2
CVE-2025-65110
Vega Cross-Site Scripting (XSS) via expression abusing vlSelectionTuples function array map calls in environments with satisfactory function gadgets in the global scope
High
8.1
CVE-2025-59840
Vega Cross-Site Scripting (XSS) via expressions abusing toString calls in environments using the VEGA_DEBUG global variable
High
8.1
CVE-2025-27793
Vega vulnerable to Cross-site Scripting via RegExp.prototype[@@replace]
Medium
5.3
CVE-2025-26619
Vega Cross-Site Scripting (XSS) via event filter when not using CSP mode `expressionInterpeter`
Medium
5.3
Affected Vendor
vega
View all reports →Affected Software
vega
Vulnerable Versions:
< 5.17.3
Timeline
Official Publish:
December 30th, 2020
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N