CVE-2026-93756Smash Balloon Social Post Feed <= 4.13.0 - Unauthenticated Stored Cross-Site Scripting via Facebook Comment Message in Admin Builder Preview
Updated under an hour ago ()
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It affects smub Smash Balloon Social Post Feed – Simple Social Feeds for WordPress. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.27%, higher than 18% of scored CVEs.
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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.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.27% (percentile 18)
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
smub Smash Balloon Social Post Feed – Simple Social Feeds for WordPress smub:smash_balloon_social_post_feed_simple_social_feeds_for_wordpress (from the name) | through 4.13.0 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a4a3bc4b-bc0c-47ac-9f60-e05b300311b4?source=cve
- https://plugins.trac.wordpress.org/browser/custom-facebook-feed/tags/4.12.0/inc/Integrations/CFF_Graph_Url.php#L76
- https://plugins.trac.wordpress.org/browser/custom-facebook-feed/tags/4.12.0/inc/Builder/CFF_Feed_Builder.php#L805
- https://plugins.trac.wordpress.org/browser/custom-facebook-feed/tags/4.12.0/admin/builder/templates/preview/preview-components.php#L142
- https://plugins.trac.wordpress.org/browser/custom-facebook-feed/tags/4.12.0/inc/Builder/CFF_Feed_Builder.php#L242
- https://plugins.trac.wordpress.org/browser/custom-facebook-feed/tags/4.12.0/admin/addon-functions.php#L142
- https://plugins.trac.wordpress.org/changeset/3720826/custom-facebook-feed/trunk/admin/builder/templates/preview/preview-components.php?old=3656491&old_path=custom-facebook-feed%2Ftrunk%2Fadmin%2Fbuilder%2Ftemplates%2Fpreview%2Fpreview-components.php
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.