Path Traversal in Backupguard Jetbackup – Backup, Restore & Migrate
CVE-2026-4853
The JetBackup – Backup, Restore & Migrate plugin for WordPress is vulnerable to Path Traversal leading to Arbitrary Directory Deletion in versions up to and including 3.1.19.8. This is due to insufficient input validation on the fileName p…
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.000 (8.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Backupguard Jetbackup – Backup, Restore & Migrate — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/4aa0fa80-05dd-4fe1-b7b5-7ed0c…
- plugins.trac.wordpress.org/browser/backup/trunk/src/JetBackup/Upload/Upload.php
- plugins.trac.wordpress.org/browser/backup/tags/3.1.17.5/src/JetBackup/Upload/Up…
- plugins.trac.wordpress.org/browser/backup/trunk/src/JetBackup/Ajax/Calls/AddToQ…
- plugins.trac.wordpress.org/browser/backup/tags/3.1.17.5/src/JetBackup/Ajax/Call…
- plugins.trac.wordpress.org/browser/backup/trunk/src/JetBackup/Ajax/Calls/AddToQ…
- plugins.trac.wordpress.org/browser/backup/tags/3.1.17.5/src/JetBackup/Ajax/Call…
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-4853?
- CVE-2026-4853 is a medium-severity vulnerability in Backupguard Jetbackup – Backup, Restore & Migrate, classified under Path Traversal. CVSS score: 4.9/10. Published 2026-04-17.
- How severe is CVE-2026-4853?
- Medium severity. CVSS v3 base score is 4.9 out of 10.