CVE-2026-89064
All-in-One WP Migration and Backup <= 7.110 - Unauthenticated Insufficient Credential Protection via Authorization Basic Header
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
Description
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.
Timeline
ID reserved
By Wordfence
- 7 days later
· 7 days later
Published
- 1 day later
· 1 day 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 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.50% · top 57% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
servmask · All-in-One WP Migration and Backup
- affected ≤ 7.110
References (5)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5a8737b1-fb68-4609-8474-9395f30c1089?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/all-in-one-wp-migration/tags/7.110/lib/controller/class-ai1wm-main-controller.php#L1315 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/all-in-one-wp-migration/tags/7.110/lib/controller/class-ai1wm-main-controller.php#L1303 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/all-in-one-wp-migration/tags/7.110/lib/controller/class-ai1wm-main-controller.php#L82 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3696427%40all-in-one-wp-migration&new=3696427%40all-in-one-wp-migration (opens in a new tab)
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)
- 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://trackcve.app/cve/CVE-2026-89064)Record last updated .