CVE-2026-4063 Missing authorization in Social Icons Widget & Block – Social Media Icons & Share Buttons
Authenticated subscribers can create sharing configurations that inject social buttons into all posts due to missing capability checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4063?
CVE-2026-4063 is a medium-severity missing authorization vulnerability in wpzoom Social Icons Widget & Block – Social Media Icons & Share Buttons, published on 13 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Social Icons Widget & Block by WPZOOM plugin for WordPress is vulnerable to unauthorized data modification due to a missing capability check in the add_menu_item() method hooked to admin_menu in all versions up to, and including, 4.5.8. This is due to the method performing wp_insert_post() and update_post_meta() calls to create a sharing configuration without verifying the current user has administrator-level capabilities. This makes it possible for authenticated attackers, with Subscriber-level access and above, to trigger the creation of a published wpzoom-sharing configuration post with default sharing button settings, which causes social sharing buttons to be automatically injected into all post content on the frontend via the the_content filter.
Weakness: CWE-862
Which versions are affected by CVE-2026-4063?
How do I fix CVE-2026-4063?
No fix has been published for CVE-2026-4063 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-2026-4063 being exploited?
There is no known exploitation of CVE-2026-4063 in the wild and no public exploit code.
Sources
Also known as GHSA-5xh8-vh3c-9fxf.