{"id":"CVE-2023-6553","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-6553","generatedAt":"2026-10-28T01:10:49.074Z","title":"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.","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.","published":"2023-12-15T11:15:48.000Z","lastModified":"2026-06-17T06:50:59.000Z","status":"Modified","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-94"],"affected":["backupbliss/backup migration"],"epss":{"score":0.97846,"percentile":0.99907,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2026-03-03","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":52486,"kind":"exploit","title":"WordPress Backup Migration 1.3.7 - Remote Command Execution","url":"https://www.exploit-db.com/exploits/52486","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/52486.txt","file":"exploits/multiple/webapps/52486.txt","published":"2026-03-03","added":"2026-03-03","updated":"2026-03-03","author":"dangwenjing","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2023-6553"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 97.8%, higher than 100% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L118","tags":["Patch"],"source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L38","tags":["Patch"],"source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L62","tags":["Patch"],"source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L64","tags":["Patch"],"source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3006541%40backup-backup&new=3006541%40backup-backup&sfp_email=&sfph_mail=","tags":["Patch"],"source":"security@wordfence.com"},{"url":"https://www.synacktiv.com/en/publications/php-filters-chain-what-is-it-and-how-to-use-it","tags":["Not Applicable"],"source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/3511ba64-56a3-43d7-8ab8-c6e40e3b686e?source=cve","tags":["Third Party Advisory"],"source":"security@wordfence.com"},{"url":"http://packetstormsecurity.com/files/176638/WordPress-Backup-Migration-1.3.7-Remote-Command-Execution.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L118","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L38","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L62","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.7/includes/backup-heart.php#L64","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3006541%40backup-backup&new=3006541%40backup-backup&sfp_email=&sfph_mail=","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.synacktiv.com/en/publications/php-filters-chain-what-is-it-and-how-to-use-it","tags":["Not Applicable"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/3511ba64-56a3-43d7-8ab8-c6e40e3b686e?source=cve","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-6553","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}