Auth bypass in Backwpup
CVE-2026-86815
The BackWPup WordPress plugin before 5.7.5 does not properly restrict access to several of its REST API routes for job, backup-destination, and backup-execution management, allowing users holding a BackWPup WordPress plugin before 5.7.5-defined, administrator-assigned limited role to create and run backup jobs and exfiltrate a full database backup to an attacker-controlled destination.
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Unknown Backwpup
Weakness classification (CWE)
References
- contact@wpscan.com (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-86815?
- CVE-2026-86815 is a medium-severity vulnerability in Backwpup, classified under Missing Authorization. CVSS score: 5.5/10. Published 2026-09-11.
- How severe is CVE-2026-86815?
- Medium severity. CVSS v3 base score is 5.5 out of 10.