{
 "id": "WPSEC-2026-2647",
 "url": "https://wpsec.com/vuln/WPSEC-2026-2647/",
 "json_url": "https://wpsec.com/vuln/WPSEC-2026-2647/advisory.json",
 "markdown_url": "https://wpsec.com/vuln/WPSEC-2026-2647/index.md",
 "title": "BackUpWordPress <= 3.14 - Authenticated (Subscriber+) Missing Authorization to Backup Directory File Deletion via hmbkp_dismiss_error AJAX Action",
 "description": "The BackUpWordPress plugin for WordPress is vulnerable to unauthorized file deletion via the hmbkp_dismiss_error AJAX action in all versions up to, and including, 3.14, due to a missing capability check and missing nonce verification in the dismiss_error() function. The handler runs the backup directory cleanup routine, which deletes every file in the backups directory except .zip archives, index.html, the .files manifest and '-running' status files, and then clears the plugin's notices. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete files in the backups directory, including the .htaccess file that protects stored backup archives and in-progress database dumps. This can break running backups and weaken the protection of the backup archives.",
 "plugin": {
  "slug": "backupwordpress",
  "name": "BackUpWordPress",
  "full_name": "BackUpWordPress",
  "wordpress_org": "https://wordpress.org/plugins/backupwordpress/",
  "advisories_url": "https://wpsec.com/vuln/plugin/backupwordpress/",
  "attacksurface": "https://attacksurface.wpsec.com/plugin/backupwordpress"
 },
 "type": "FILE DELETION",
 "cwe": [
  "CWE-862"
 ],
 "cve": [],
 "cvss": {
  "version": "3.1",
  "score": 5.4,
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
  "severity": "Medium"
 },
 "affected": {
  "ranges": [
   {
    "from": "1.6.2",
    "from_inclusive": true,
    "to": "3.15",
    "to_inclusive": false
   }
  ],
  "text": [
   "from 1.6.2 before 3.15"
  ]
 },
 "introduced_in": "1.6.2",
 "fixed_in": "3.15",
 "remediation": "Update to 3.15 or later.",
 "fix_released": "2026-11-05T10:52:26+00:00",
 "published": "2026-11-06T12:43:54+00:00",
 "updated": "2026-11-06T12:02:54.383587+00:00",
 "also_published_as": null,
 "references": [
  "https://wpsec.com/vuln/WPSEC-2026-2647/",
  "https://plugins.svn.wordpress.org/backupwordpress/tags/3.15/",
  "https://wordpress.org/plugins/backupwordpress/"
 ],
 "attacksurface_url": "https://attacksurface.wpsec.com/plugin/backupwordpress",
 "source": "WPSec",
 "license": {
  "name": "CC BY 4.0",
  "url": "https://creativecommons.org/licenses/by/4.0/"
 },
 "usage": {
  "plugin": "Low",
  "affected_versions": "Low",
  "as_of": "2026-11-06"
 }
}