# WP STAGING WordPress Backup Plugin – Migration Backup Restore <= 4.16.0 - Unauthenticated Sensitive Information Exposure via Corrupted Staging Site Report File

- **ID:** WPSEC-2026-0701
- **Plugin:** WP STAGING – Backups & Restore, Migration & Clone Plugin – Cloud Backups, Scheduled Backups (`wp-staging`), https://wordpress.org/plugins/wp-staging/
- **Affected versions:** all versions before 4.17.0
- **Fixed in:** 4.17.0 (Update to 4.17.0 or later.)
- **Severity:** Medium 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **Weakness:** CWE-532
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-10)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/wp-staging
- **Fix released:** 2026-10-09
- **Published:** 2026-10-10
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0701/

## Description

The WP STAGING plugin for WordPress is vulnerable to Sensitive Information Exposure via the corrupted staging sites option report in all versions up to, and including, 4.16.0, due to the plugin writing the raw serialized staging sites option, including staging database and admin passwords, to a fixed, predictable file name (corrupted-staging-site-option.log) in its publicly served uploads log directory and never deleting it. The .htaccess the plugin places in that directory does not deny access. This makes it possible for unauthenticated attackers to download the file and obtain staging site database and administrator credentials, provided an administrator has used the repair or report action for a corrupted staging sites option.

## References

- https://wpsec.com/vuln/WPSEC-2026-0701/
- https://plugins.svn.wordpress.org/wp-staging/tags/4.17.0/
- https://wordpress.org/plugins/wp-staging/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0701/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.