Findings

CVE-2025-66648

vega-functions provides function implementations for the Vega expression language.

Published Jan 5, 2026 · updated Oct 14, 2026 · vega-functions project vega-functions

vega-functions provides function implementations for the Vega expression language. Prior to version 6.1.1, for sites that allow users to supply untrusted user input, malicious use of an internal function (not part of the public API) could be used to run unintentional javascript (XSS). This issue is fixed in vega-functions . There is no workaround besides upgrading. Using as described in CSP safe mode does not prevent this issue.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 5, 2026 · NIST NVD

    Detected

    vega-functions provides function implementations for the Vega expression language. Prior to version 6.1.1, for sites that allow users to supply untrusted user input, malicious use of an internal function (not part of the public API) could be used to run unintentional javascript (XSS). This issue is fixed in vega-functions . There is no workaround besides upgrading. Using as described in CSP safe m

  2. Oct 14, 2026 · NIST NVD

    Updated

    vega-functions provides function implementations for the Vega expression language. Prior to version 6.1.1, for sites that allow users to supply untrusted user input, malicious use of an internal function (not part of the public API) could be used to run unintentional javascript (XSS). This issue is fixed in vega-functions . There is no workaround besides upgrading. Using as described in CSP safe m

Affected

  • cpe vega-functions project/vega-functionsversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2025-66648

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66648

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2025-66648

    vega-functions provides function implementations for the Vega expression language. Prior to version 6.1.1, for sites that allow users to supply untrusted user input, malicious use of an internal function (not part of the public API) could be used to run unintentional javascript (

    nvd.nist.gov

References