Improper sanitization in the registration module allows reflected Cross-Site Scripting.

Summary

Improper sanitization in the registration module allows reflected Cross-Site Scripting.

Remediation

1. Inventory every phpBB phpBB deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Referencehttps://www.phpbb.com/community/viewtopic.php?t=2675305