CVE-2023-6553Backup Migration <= 1.3.7 - Unauthenticated Remote Code Execution
- 9.8CriticalCVSS base score
- 97.8%Exploitation in 30 daysEPSS · top 0.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module, a Nuclei template and an Exploit-DB entry for it. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits3
Metasploit modules1 module
- WordPress Backup Migration Plugin PHP Filter Chain RCE (Metasploit module) (opens in a new tab)
exploit/multi/http/wp_backup_migration_php_filterRank excellentdisclosed 11 Dec 2023
Nuclei templates1 template
- Worpress Backup Migration <= 1.3.7 - Unauthenticated Remote Code Execution (Nuclei template) (opens in a new tab)
http/cves/2023/CVE-2023-6553.yamlSeverity critical
Exploit-DB1 entry
- WordPress Backup Migration 1.3.7 - Remote Command Execution (Exploit-DB entry) (opens in a new tab)
EDB-ID 52486webapps, multiplepublished 3 Mar 2026Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By Wordfence
- 9 days later
· 9 days later
Published
- 2 years later
· 2 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 97.8% · top 0.1% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
inisev · BackupBliss – Backup & Migration with Free Cloud Storage
- affected ≤ 1.3.7
References
References8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3511ba64-56a3-43d7-8ab8-c6e40e3b686e?source=cve (opens in a new tab)x_transferred
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L38 (opens in a new tab)x_transferred
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L62 (opens in a new tab)x_transferred
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L64 (opens in a new tab)x_transferred
- https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L118 (opens in a new tab)x_transferred
- https://www.synacktiv.com/en/publications/php-filters-chain-what-is-it-and-how-to-use-it (opens in a new tab)x_transferred
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3006541%40backup-backup&new=3006541%40backup-backup&sfp_email=&sfph_mail= (opens in a new tab)x_transferred
- http://packetstormsecurity.com/files/176638/WordPress-Backup-Migration-1.3.7-Remote-Command-Execution.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-58782 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-6553)Record last updated .