Arbitrary JavaScript Execution in Vega Visualization Tool

CVE-2025-26619

What is CVE-2025-26619?

The Vega visualization grammar is susceptible to an issue that permits the execution of unauthorized JavaScript functions through the Vega expression language in versions 5.30.0 and below, as well as in 'vega-functions' version 5.15.0 and lower. Although a patch has been released in version 5.31.0 for 'vega' and version 5.16.0 for 'vega-functions', users should exercise caution. As a temporary mitigation, running 'vega' without the 'vega.expressionInterpreter' can be considered, although it is slower and not the default mode. Alternatively, operating in CSP safe mode mitigates the risk of arbitrary JavaScript execution.

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