Google Monorail before 2018-06-07 has a Cross-Site Search (XS-Search) vulnerability because CSV downloads are affected by CSRF, and calculations of download times (for requests with a crafted groupby value) can be used to obtain sensitive information about the content of bug reports.
https://www.reddit.com/r/netsec/comments/9yiidf/xssearching_googles_bug_tracker_to_find_out/ea2i7wz/
https://chromium.googlesource.com/infra/infra/+/e27936ef82d33a5f286e1f2f22817aa682f79e90