Question
There is no patch for supee-11086 for 1.8.x
A few places recommend using 1.7.x patch.
This does not work as there are changes in /lib/Varian/Filter/Template.php between 1.7 => 1.8
1.7: https://github.com/OpenMage/magento-mirror/blob/magento-1.7/lib/Varien/Filter/Template.php
1.8: https://github.com/OpenMage/magento-mirror/blob/magento-1.8/lib/Varien/Filter/Template.php
Has anyone got around this problem yet or have any suggestions?
Solution
The naming convention for the new patch has changed for some reason.
So for Magento 1.8 patches you are going to need to apply PATCH_SUPEE-11086_CE_1.9.1.0_v1.sh
As the version number in the patch name is the newest version it applies to, for example
PATCH_SUPEE-11086_CE_1.7.0.2_v1.sh
applies to versions 1.6.2.1
to 1.7.0.2
PATCH_SUPEE-11086_CE_1.9.1.0_v1.sh
applies to versions 1.7.0.3
to 1.9.1.0
PATCH_SUPEE-11086_CE_1.9.2.4_v1.sh
applies to versions 1.9.1.1
to 1.9.2.4
OTHER TIPS
The latest patch SUPEE-11086 for Magento ver.1.8.1.0 can be done with PATCH_SUPEE-11086_CE_1.9.1.0.
Its works for me.