MantisBT through 2.3.0 allows arbitrary password reset and unauthenticated admin access via an empty confirm_hash value to verify.php.
File Snapshot
id: CVE-2017-7615
# THIS TEMPLATE IS ONLY FOR DETECTING
# To carry out further attacks, please see
...
Shenlong Bot has cached this for you
Remarks
1. It is advised to access via the original source first.2. If the original source is unavailable, please email f.jinxu#gmail.com for a local snapshot (replace # with @).3. Shenlong has snapshotted the POC code for you. To support long-term maintenance, please consider donating. Thank you for your support.