WP Staging (Free < 3.1.3, Pro < 5.1.3) - Unauthenticated Backup Download

Description The plugin does not prevent visitors from leaking key information about ongoing backups processes, allowing unauthenticated attackers to download said backups later.

PoC

The plugin creates temporary cache files when backing up sites, which are publicly accessible to anyone. Said cache files contain critical information (such as a backup’s secret ID), allowing attackers to find and download the resulting backup files. While running a new backup (or one automatically runs!), try to get ahold of the following cache file: https://vulnerable-site.tld/wp-content/uploads/wp-staging/cache/jobCache_backup_job.cache Once this is done, you will find the resulting backup file at https://vulnerable-site.tld/wp-content/uploads/wp-staging/backups/vulnerable-site.tld_YYYYMMDD-HHMMSS_SECRETID.wpstg You can find the date (“YYMMDD”), the time (“HHMMSS”) and SECRETID in the information leaked from the cache file.