Bug 2345818 (CVE-2025-25304)

Summary: CVE-2025-25304 vega: Vega allows Cross-site Scripting via the vlSelectionTuples function
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: caswilli, kaycoth
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Vega. In affected versions of Vega and Vega-selections, the `vlSelectionTuples` function can be used to call JavaScript functions, leading to cross-site scripting. This flaw allows an attacker to control multiple functions called by`vlSelectionTuples`, including one call with an attacker-controlled argument. This vulnerability can be used to call `Function()` with arbitrary JavaScript, and the resulting function can be called with `vlSelectionTuples` or using type coercion to call `toString` or `valueOf.`
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Bug Depends On: 2345860, 2345861    
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Description OSIDB Bzimport 2025-02-14 20:01:05 UTC 
Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. Prior to version 5.26.0 of vega and 5.4.2 of vega-selections, the `vlSelectionTuples` function can be used to call JavaScript functions, leading to cross-site scripting.`vlSelectionTuples` calls multiple functions that can be controlled by an attacker, including one call with an attacker-controlled argument. This can be used to call `Function()` with arbitrary JavaScript and the resulting function can be called with `vlSelectionTuples` or using a type coercion to call `toString` or `valueOf`. Version 5.26.0 of vega and 5.4.2 of vega-selections fix this issue.