CVE-2026-3567 Missing authorization in RepairBuddy – Repair Shop CRM & Booking Plugin for WordPress
Authenticated subscribers can modify admin-level plugin settings by bypassing capability checks via a nonce generation flaw.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3567?
CVE-2026-3567 is a medium-severity missing authorization vulnerability in sweetdaisy86 RepairBuddy – Repair Shop CRM & Booking Plugin for WordPress, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The RepairBuddy – Repair Shop CRM & Booking Plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 4.1132. The plugin exposes two AJAX handlers that, when combined, allow any authenticated user to modify admin-level plugin settings. First, the wc_rb_get_fresh_nonce() function (registered via wp_ajax and wp_ajax_nopriv hooks) allows any user to generate a valid WordPress nonce for any arbitrary action name by simply providing the nonce_name parameter, with no capability checks. Second, the wc_rep_shop_settings_submission() function only verifies the nonce (wcrb_main_setting_nonce) but performs no current_user_can() capability check before updating 15+ plugin options via update_option(). This makes it possible for authenticated attackers, with subscriber-level access and above, to modify all plugin configuration settings including business name, email, logo, menu label, GDPR settings, and more by first minting a valid nonce via the wc_rb_get_fresh_nonce endpoint and then calling the settings submission handler.
Weakness: CWE-862
Which versions are affected by CVE-2026-3567?
How do I fix CVE-2026-3567?
No fix has been published for CVE-2026-3567 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-3567 being exploited?
There is no known exploitation of CVE-2026-3567 in the wild and no public exploit code.
Sources
Also known as GHSA-9v48-95f3-hqxh.