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Vega Cross-Site Scripting (XSS) via expressions abusing toString calls in environments using the VEGA_DEBUG global variable

🗓️ 13 Nov 2025 22:32:35Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 7 Views

Vega XSS via toString abuse when Vega is attached to the window with user JSON, enabling code execution.

Related
Detection
Refs
Vulners
Node
vega_projectvegaRange<6.2.0npm
OR
vega-expressionRange<5.2.1npm
OR
vega-interpreterRange<1.2.1npm
OR
vega-interpreterRange2.0.02.2.1npm
OR
vega-expressionRange6.0.06.1.0npm

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14 Nov 2025 16:05Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.18.1
EPSS0.00034
SSVC
7