EUVD-2026-69000
GHSA-pvfv-gmj3-wwvh
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Stored XSS requires a victim to visit the injected page (UI:R); all other metrics align with the vendor-provided vector including scope change and low authentication.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Stored Cross-Site Scripting in WPBakery Page Builder for WordPress (versions through 8.7.4) allows authenticated attackers with subscriber-level access to persistently inject arbitrary JavaScript into pages viewed by any site visitor. The vulnerability stems from a sanitization bypass: the wp_kses_post function strips HTML tags but cannot neutralize base64-encoded payloads - which appear as plain alphanumeric text - and the vc_raw_html shortcode template subsequently decodes and echoes that content without escaping at render time. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated WordPress session with subscriber-level privileges or higher - PR:L per the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N) reflects a network-accessible, low-complexity stored XSS with scope change - meaning the impact crosses the security boundary from the attacker's session into victim browsers. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update WPBakery Page Builder to a version beyond 8.7.4 as soon as the vendor releases a patched build; no specific fixed version number was confirmed in the available data, so administrators should monitor the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/b61ced52-30a2-407a-8659-1ae4a4d99aab and the plugin's official changelog on WordPress.org for patch confirmation. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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