vBulletin has released a security patch to improve the security of the vBulletin 4 MAPI for 4.1.12 Suite & Forum as the result of a recent internal security review. Although no exploits have been reported, we urge our customers to upgrade as soon as possible.

The changes do not affect vBulletin 4.0.0 - 4.1.1.

This patch has been issued for vBulletin 4.1.12. A separate set of patches have been issued for vBulletin 4.1.2 - 4.1.11.

The MAPI security improvements have been added for vBulletin 3.x with the release of 3.x MAPI 1.4.3.

To improve the security of your vBulletin 4 installation, please download the patch from the members area of vBulletin: http://members.vbulletin.com/

In addition to the security improvements, we've resolved the following 4.1.12 issues.


  • VBIV-14742 - Push notifications broken in FR 4.1.12 add-on.
  • VBIV-14685 - Tag in static page cause Fatal error on page with General Search widget set to return Static Pages
  • VBIV-14663 - Quoting doesn't work in the mobile style
  • VBIV-14660 - Static HTML in CMS always displays all content
  • VBIV-14754 - unset($VB_API_PARAMS_TO_VERIFY['vbseourl']) to match vB3 MAPI change.
  • VBIV-14681 - HTML is stripped from article previews
  • VBIV-14667 - Category pages do not load if using basic/advanced friendly URLs



The upgrade process is slightly more complicated for this patch level release.



  1. Download PL1 for vBulletin 4.1.12 from https://members.vbulletin.com.
  2. Upload the patch do your server.
  3. Unzip the patch to your vBulletin 4 install directory. (Ex. /var/www/html/myforum)
  4. Run ./install/upgrade.php. (Required for 4.1.12.)
  5. Download the "API-Log-Clean.xml" attached to this thread. (Included in the do_not_upload folder for full installs.)
  6. Import "API-Log-Clean.xml" using the "Manage Products" interface in the "Plugins & Products" section of your Admin CP. The cleanup script will run on install. AdminCP -> Plugins & Products -> Manage Products -> Add/Import Product
  7. Delete "API-Log-Clean" using the "Product Manager" option in the "Plugins & Products" section of your Admin CP. (Optional. The product is automatically disabled after the script runs.)



Advanced Users - Files updated in the patch are:


  • /api.php
  • /forumrunner/push.php
  • /includes/class_friendly_url.php
  • /includes/init.php
  • /install/vbulletin-mobile-style-blog.xml
  • /install/vbulletin-mobile-style.xml
  • /packages/vbcms/content/phpeval.php
  • /packages/vbcms/content/staticpage.php
  • /packages/vbcms/item/content/article.php
  • /packages/vbcms/item/content/phpeval.php
  • /packages/vbcms/search/result/staticpage.php


Please note that this issue and fix affects BOTH vBulletin 4 SUITE and FORUM.

Discuss the security patch - HERE
Discuss vBulletin 4.1.12 - HERE
Attached Files