CVE-2025-27793: vega Cross-site Scripting

Vulnerability summary

CVE-2025-27793 is a medium (CVSS 5.3) Cross-site Scripting vulnerability in vega. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 43% of scored vulnerabilities.

Timeline

1. 27-03-2025
   PublishedVulnerability first disclosed.
2. 27-03-2025
   Last modifiedVulnerability information updated.

Description

Vega is a visualization grammar, a declarative format for creating, saving, and sharing interactive visualization designs. In Vega prior to version 5.32.0, corresponding to vega-functions prior to version 5.17.0, users running Vega/Vega-lite JSON definitions could run unexpected JavaScript code when drawing graphs, unless the library was used with the `vega-interpreter`. Vega version 5.32.0 and vega-functions version 5.17.0 fix the issue. As a workaround, use `vega` with expression interpreter.

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
• CWE-87Improper Neutralization of Alternate XSS SyntaxThe product does not neutralize or incorrectly neutralizes user-controlled input for alternate script syntax.