CVE-2026-15101WPBakery Page Builder <= 8.7.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'data' Parameter
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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The WPBakery Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'data' parameter in all versions up to, and including, 8.7.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The wp_kses_post sanitization applied during save does not neutralize the payload because the malicious script content is base64-encoded as plain alphanumeric text with no HTML tags to strip; the vc_raw_html shortcode template then decodes and echoes this content unescaped at render time.
- CVSS
- 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/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)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Sep 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wpbakery WPBakery Page Builder wpbakery:page_builder (from the name) | through 8.7.4 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/b61ced52-30a2-407a-8659-1ae4a4d99aab?source=cve
- https://plugins.trac.wordpress.org/browser/js_composer/trunk/include/classes/core/presets/class-vc-settings-presets.php#L227
- https://plugins.trac.wordpress.org/browser/js_composer/trunk/include/autoload/hooks/vc-settings-presets.php#L56
- https://plugins.trac.wordpress.org/browser/js_composer/trunk/include/autoload/hooks/vc-settings-presets.php#L88
- https://plugins.trac.wordpress.org/browser/js_composer/trunk/include/templates/shortcodes/vc_raw_html.php#L30
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.