Cross-site scripting in vega - CVE-2020-26296

Vulnerability details

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Vega expressions. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Affected software

How to mitigate CVE-2020-26296

External 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

Related Security Bulletins

• Cross-site scripting in Vega library (NPM)
• Kibana security update for Vega JS library