Threat intelligence

Smash Balloon Social Post Feed <= 4.9.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute

CVE-2026-16775 · custom-facebook-feed

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Custom Facebook Feed at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Smash Balloon Social Post Feed <= 4.9.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute
Affected software: custom-facebook-feed(Plugin)
Affected versions: ≤ 4.9.0
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-16775
Published: 15 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory ae039144-2c02-4a00-9fff-f4e90a6a8236). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Custom Facebook Feed version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Custom Facebook Feed advisoriesBack to catalog