CVE-2026-93756 Cross-site scripting in Smash Balloon Social Post Feed – Simple Social Feeds for WordPress
Unauthenticated attackers can inject scripts via Facebook comments that execute in admin sessions, potentially leading to plugin installation and server-side code execution.
- 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-2026-93756?
CVE-2026-93756 is a high-severity cross-site scripting vulnerability in smub Smash Balloon Social Post Feed – Simple Social Feeds for WordPress, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Smash Balloon Social Post Feed – Simple Social Feeds for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Facebook Comment Message via v-html in Admin Builder Preview in all versions up to, and including, 4.13.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that will execute whenever an administrator accesses the feed builder preview page. This attack requires only a Facebook account to post a comment on the connected Facebook Page, with no WordPress credentials needed; additionally, the use of v-show rather than v-if means injected HTML — including onerror handlers — is evaluated in the DOM even when the comment section is not visually displayed. When combined with the lack of URL validation in the cff_install_addon AJAX handler (admin/addon-functions.php), an injected script running in an administrator's session can trigger arbitrary plugin installation from an attacker-controlled URL, which may result in server-side code execution.
Weakness: CWE-79
Which versions are affected by CVE-2026-93756?
How do I fix CVE-2026-93756?
No fix has been published for CVE-2026-93756 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-93756 being exploited?
There is no known exploitation of CVE-2026-93756 in the wild and no public exploit code.
Sources
Also known as GHSA-gg2r-v4vh-hxrm.