MyBB 1.4.7 Released – Security Update

MyBB 1.4.7 is a security update to the MyBB 1.4 series. It fixes 1 high risk security vulnerability. We recommend everybody upgrades to this release immediately or patch their boards with the manual patching instructions below.

This vulnerability affects MyBB 1.4.6. MyBB 1.2 is not affected.

Thank you to Jesse Labrocca for alerting us of this vulnerability.

MyBB 1.4.6 to MyBB 1.4.7 Patch

This patch is only for users running MyBB 1.4.6. If you are running an older version of MyBB then please download MyBB 1.4.7 from the MyBB site and update to it.

Please download the attached ZIP archive and replace the files in your forum directory with those from the ZIP archive.

If you wish to manually patch your board please download “mybb_1406_patches.txt” and follow the instructions in that file.


Please Note: You do not have to run the upgrade script for this release.

Reporting MyBB security vulnerabilities

If you think you’ve found a vulnerability in MyBB, we advise you not to publicly post it on these forums or publicly release information about it elsewhere until we’ve had time to prepare and release a patch.

As always, you can send through security related messages on the MyBB website from the Contact Us page.

MyBB 1.2.14 Patch

MyBB 1.2 is not affected.

Please note all users of the 1.2.x series are urged to upgrade to the latest release of MyBB. (1.4.7) MyBB 1.2 is no longer being supported, though security updates for the MyBB 1.2 series will last through December 2009.

24 thoughts on “MyBB 1.4.7 Released – Security Update

  1. May I point out again that if you are upgrading from 1.4.6 there is no upgrade script for this upgrade. You just need to upload the changed files or manually make the edits.

  2. Pingback: Bunnykins’ Blog » Blog Archive » MyBB 1.4.7 Released – Security Update

  3. Went as smooth as a babies butt! Thanks myBB, you’re all the greatest. We’re leaving SMF in the dust!

  4. MyBB…… You complete () Me πŸ™‚

    Thanks for the patch. Upgrade was super simple and without issues.

    Keep up the great work !!

    Cheers !

  5. Had this exploited and the whole forum was deleted… lesson definitely learned (and patch applied). Thank goodness for my awesome hosts who keep daily backups.

  6. My forum was attacked with an exploit while i was upgrading to the newer 1.4.8 version from 1.4.6 and another from 1.4.5, the attacker gains administrative access via an exploit which is now posted on searched simply under “mybb”.

    The patch most certainly fixed the problem.

  7. since I like to know what happens, I downloaded the patch instruction and am applying it manually.
    Seeing that you need to escape birthdayprivacy, it strikes me as odd that the same precaution would not apply to birthday, just a few lines above in user.php.

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