MyBB 1.8.16 published

MyBB 1.8.16 has been published and is now available for download. It is a release to improve the quality of maintainance and security.

Currently we advise against downloading MyBB Version 1.8.16 , because some severe problems had been discovered. Developers intend to release MyBB 1.8.17 soon in order to put these mistakes right. Although we recommend to install security based Updates as soon as possible, we cannot recommend this Version with good conscience, at least in its current state.
According to this reasons, we keep offering version 1.8.15 on our download-site. Downloads for 1.8.16 are to be found on

What has changed?
6 security breaches and 66 Errors had been fixed.

Fixed security breaches:

  • High risk: Image & URL MyCode Persistent XSS
  • Medium risk: Multipage Reflected XSS
  • Low risk: ACP logs XSS
  • Low risk: Arbitrary file deletion via ACP’s Settings
  • Low risk: Login CSRF
  • Low risk: Non-video content embedding via Video MyCode

Check Release Notes for a list of changes to language files, templates and unresolved issues.

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