XSS in Vega

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.

Recommendation

Update the vega package to the latest compatible version. Followings are version details:

• Affected version(s): < 5.17.3
• Patched version(s): 5.17.3

References

• GHSA-r2qc-w64x-6j54
• www.npmjs.com
• CVE-2020-26296
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• DOM-based XSS in auth0-lock - CVE-2020-15119
• Vega Cross-Site Scripting (XSS) via event filter when not using CSP mode expressionInterpeter - CVE-2025-26619
• Cross-site Scripting (XSS) in Eclipse Theia - CVE-2020-27224
• Vega Cross-Site Scripting (XSS) via expressions abusing toString calls in environments using the VEGA_DEBUG global varia - vega-expression - CVE-2025-59840

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Tags:

npm

vega