Keep Backup Daily exposes full database backups without authentication

Keep Backup Daily before 2.1.4 exposes the kbd_cron_process parameter without authentication. A remote attacker can trigger a full MySQL database dump, predict the partly randomized filename from the database name, limited random range and current Unix timestamp, and download the backup from the public uploads directory.

CVE / CNA score 8.7 CVSS 4.0 · disclosure@vulncheck.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Keep Backup Daily
Plugin slug: keep-backup-daily
Affected: < 2.1.4
Safe version: 2.1.4
Published: Aug 31, 2026
Weakness: CWE-306 — Missing Authentication for Critical Function

This CVE was published Aug 31, 2026 and is one of 6 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Keep Backup Daily to 2.1.4 or later, remove exposed database dumps from public storage, review access logs, and rotate WordPress, database and application secrets contained in a backup.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

Keep Backup Daily plugin for WordPress before 2.1.4 contains a sensitive information exposure vulnerability that allows unauthenticated attackers to trigger a full MySQL database dump by accessing the publicly exposed `kbd_cron_process` parameter without authentication. Attackers can predict the partially predictable dump filename based on the database name, a limited random range, and the current Unix timestamp to download the generated backup from the publicly accessible uploads directory.

CVE / CNA vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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