CVE-2026-93953
Description
The Backuply – Backup, Restore, Migrate and Clone plugin for WordPress is vulnerable to SQL Injection via the Biographical Info field (second-order, via restore) in all versions up to, and including, 1.5.8 due to insufficient escaping on the user supplied parameter and the lack of sufficient preparation on an existing SQL query. Backuply exports the Biographical Info value verbatim inside an INSERT statement written to the backup's SQL dump (wp_usermeta). When an Administrator later restores such a backup, the crafted payload breaks out of that INSERT statement and appends attacker-controlled SQL that executes with full database privileges. This makes it possible for authenticated attackers, with subscriber-level access and above, to write arbitrary data to the database — in particular to update the default_role option in wp_options to administrator (and enable open user registration) — so that a subsequently registered account is automatically granted the Administrator role, resulting in privilege escalation and full site takeover. Because the injection executes inside an INSERT during restore with no response returned to the attacker, the primitive is used to modify database records rather than to read existing data directly.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://plugins.trac.wordpress.org/browser/backuply/tags/1.5.7/backup_ins.php#L140
- https://plugins.trac.wordpress.org/browser/backuply/tags/1.5.7/backup_ins.php#L592
- https://plugins.trac.wordpress.org/browser/backuply/tags/1.5.7/restore_ins.php#L2247
- https://plugins.trac.wordpress.org/browser/backuply/tags/1.5.7/restore_ins.php#L2255
- https://plugins.trac.wordpress.org/changeset/3723257/backuply
- https://www.wordfence.com/threat-intel/vulnerabilities/id/202a2d02-a069-43d1-9ebe-59828e828c03?source=cve
CWEs
CWE-89
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.