CVE-2026-103694: Mobile builder WordPress plugin privilege escalation in REST API

CVE-2026-103694 · Severity: high · CVSS 8.8 · Published 2026-10-11

The Mobile builder plugin for WordPress fails to properly restrict which user account settings can be modified via its REST API, allowing any logged-in user—such as a customer account—to grant themselves administrator privileges. An attacker with a basic user account can escalate to full admin control without authorization, gaining complete access to the WordPress site and its data.

Technologies: Mobile builder. Vendors: Mobile builder.

Quick answers

Is CVE-2026-103694 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-103694 being exploited in the wild.
How severe is CVE-2026-103694?
High severity, with a CVSS score of 8.8, published 11 October 2026.
Which products and versions are affected?
Mobile builder through 1.4.2.
Is there a fix for CVE-2026-103694?
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-2026-103694 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-103694?
Check whether you run Mobile builder 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 a privilege escalation (CWE-269) in the Mobile builder REST route handler that does not validate which user meta keys authenticated users can modify. An attacker with a self-registered account can modify the wp_capabilities or wp_user_level meta keys to grant themselves the administrator role. No authorization check is performed on the meta key being updated, allowing any authenticated user to perform the escalation.

Affected products

  • Mobile builder Mobile builder through 1.4.2

Timeline

  • 2026-10-09: disclosed
  • 2026-10-11: advisory

References

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