Thread:Project:Support desk/mediawiki-1.19.8.patch.gz/reply

1.19.8 is insecure; update to 1.19.11 instead. Since one of the patch files from inbetween is missing, you should take the complete tar.gz file (mediawiki-1.19.11.tar.gz) and overwrite your files with the one from that package as explained on page Manual:Upgrading.