Quick answers
- Is CVE-2026-89064 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-89064 being exploited in the wild.
- How severe is CVE-2026-89064?
- Medium severity, with a CVSS score of 5.3, published 17 September 2026.
- Which products and versions are affected?
- ServMask All-in-One WP Migration up to and including 7.110.
- Is there a fix for CVE-2026-89064?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-89064 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-89064?
- Check whether you run ServMask All-in-One WP Migration at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is insufficient credential protection in the `Ai1wm_Main_Controller::init()` method. The method is registered on the `admin_init` hook, which fires unauthenticated on requests to `admin-ajax.php` and `admin-post.php`. The vulnerable code reads `$_SERVER['PHP_AUTH_USER']` and `$_SERVER['PHP_AUTH_PW']` from the incoming request and writes them as a reversible base64-encoded string to the `ai1wm_auth_header` option using `update_option()`, with no capability check, nonce verification, authentication check, or confirmation that HTTP Basic authentication actually succeeded. An unauthenticated attacker can send a crafted `Authorization: Basic` header to exploit this, capturing legitimate credentials or injecting attacker-controlled values. The flaw is particularly dangerous in environments relying on 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 automatically harvested.
Affected products
- ServMask All-in-One WP Migration up to and including 7.110
Timeline
- 2026-09-17: disclosed