The multi-language security patch dataset contains 1253 multi-file multi-language security patches and 1545 single-file multi-language security patches from MITRE. They have been stored in two CSV files respectively. The multi-multi.csv stores the metadata and the fixing pattern of each multi-file multi-language security patch. The single-multi.csv stores the metadata and the embedded language of each single-file multi-language security patch. To retrieve the patch file, we can replace the owner, repo, and commit_id in the following URL https://github.com/{owner}/{repo}/commit/{commit_id}.patch.