Backup Migration <= 1.3.7 — Unauthenticated Remote Code Execution
CVE-2023-6553Published · Updated Action summary
Affected: ≤1.3.7Update to 1.3.8 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Backup Migration backup-backup
- Affected≤ 1.3.7
- Patched in1.3.8
Update to 1.3.8 or newer.
You are affected if you run ≤ 1.3.7. Version 1.3.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Backup Migration.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 1.3.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Backup Migration to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Nex Team.
The Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.3.7 via the /includes/backup-heart.php file. This is due to an attacker being able to control the values passed to an include, and subsequently leverage that to achieve remote code execution. This makes it possible for unauthenticated attackers to easily execute code on the server.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Backup Migration
All 19| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.7 | Authenticated (Administrator+) Privilege Escalation ≤2.1.6Update to 2.1.7 | CVE-2026-18216 | |
| High7.2 | Authenticated (Administrator+) OS Command Injection via 'file' Parameter ≤2.1.1Update to 2.1.5.2 | CVE-2026-7693 | |
| Medium5.3 | Unauthenticated Information Exposure ≤2.1.1Update to 2.1.2 | CVE-2026-39480 | |
| Medium5.3 | Missing Authorization to Unauthenticated Backup Upload to Offline Storage ≤2.0.0Update to 2.1.0 | CVE-2025-14944 | |
| High7.5 | Information Exposure to Unauthenticated Back-up Download ≤1.4.9Update to 2.0.0 | CVE-2025-12394 |
- Medium4.7Authenticated (Administrator+) Privilege Escalation
≤2.1.6Update to 2.1.7
- High7.2Authenticated (Administrator+) OS Command Injection via 'file' Parameter
≤2.1.1Update to 2.1.5.2
- Medium5.3Unauthenticated Information Exposure
≤2.1.1Update to 2.1.2
- Medium5.3Missing Authorization to Unauthenticated Backup Upload to Offline Storage
≤2.0.0Update to 2.1.0
- High7.5Information Exposure to Unauthenticated Back-up Download
≤1.4.9Update to 2.0.0
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.