CVE-2026-89064All-in-One WP Migration and Backup <= 7.110 - Unauthenticated Insufficient Credential Protection via Authorization Basic Header
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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The All-in-One WP Migration and Backup plugin for WordPress is vulnerable to Insufficient Credential Protection in versions up to, and including, 7.110. This is due to the `Ai1wm_Main_Controller::init()` method — registered on the `admin_init` hook, which fires unauthenticated on `admin-ajax.php` and `admin-post.php` requests — reading `$_SERVER['PHP_AUTH_USER']` and `$_SERVER['PHP_AUTH_PW']` from any incoming request and writing them to the `ai1wm_auth_header` option via `update_option()` as a reversible base64-encoded string, with no capability check, nonce verification, `is_user_logged_in()` check, or confirmation that Basic authentication actually succeeded. This makes it possible for unauthenticated attackers to capture into the database, in reversible base64 form, any WordPress Application Password or HTTP Basic credential presented to `/wp-admin/` by a legitimate integration, or to overwrite the stored credential with an attacker-chosen value by sending an anonymous request carrying a crafted `Authorization: Basic` header. This is particularly impactful in environments using WordPress Application Passwords for REST API or third-party integrations, as those credentials are transmitted as HTTP Basic auth to `/wp-admin/` and will be silently harvested via this unauthenticated write path.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-522
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
servmask All-in-One WP Migration and Backup servmask:all_in_one_wp_migration_and_backup (from the name) | through 7.110 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5a8737b1-fb68-4609-8474-9395f30c1089?source=cve
- https://plugins.trac.wordpress.org/browser/all-in-one-wp-migration/tags/7.110/lib/controller/class-ai1wm-main-controller.php#L1315
- https://plugins.trac.wordpress.org/browser/all-in-one-wp-migration/tags/7.110/lib/controller/class-ai1wm-main-controller.php#L1303
- https://plugins.trac.wordpress.org/browser/all-in-one-wp-migration/tags/7.110/lib/controller/class-ai1wm-main-controller.php#L82
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3696427%40all-in-one-wp-migration&new=3696427%40all-in-one-wp-migration
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.