EUVD-2026-43150
GHSA-68vf-fpc6-h9j4
Severity by source
AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
PR:H reflects mandatory administrator authentication; AC:H encodes the non-default multisite or unfiltered_html-disabled configuration prerequisite; S:C captures cross-user browser script execution impact.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
The White Label CMS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.7.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AnalysisAI
Stored Cross-Site Scripting in the White Label CMS WordPress plugin (versions through 2.7.12) permits authenticated administrators to persist arbitrary JavaScript payloads via plugin settings pages, which then execute in the browsers of other users who access affected pages. Exploitation is gated behind two hard constraints: the attacker must hold administrator-level WordPress credentials, and the target site must be either a WordPress multisite installation or a site where the unfiltered_html capability has been explicitly disabled. No public exploit has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Technical ContextAI
The White Label CMS plugin (CPE: cpe:2.3:a:videousermanuals:white_label_cms:*:*:*:*:*:*:*:*) by videousermanuals provides WordPress administrators the ability to rebrand the CMS admin interface for clients. The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation - Stored XSS), rooted in insufficient input sanitization and output escaping in two plugin source files: Admin_Dashboard.php (lines 430 and 465) and Settings.php (lines 228 and 124), all visible in the WordPress plugin repository at the 2.7.9 and 2.7.12 tags. In WordPress's permission model, the unfiltered_html capability normally allows administrators to post raw HTML and scripts; when that capability is revoked (common in hardened or multisite environments), the plugin fails to independently sanitize its own settings inputs before persisting them, creating a persistent XSS sink that executes for any user rendering the affected pages.
RemediationAI
An upstream code change addressing this vulnerability is visible in the WordPress plugin repository changeset (https://plugins.trac.wordpress.org/changeset?reponame=&old=3600959%40white-label-cms&new=3600959%40white-label-cms); however, a specific released patched version number is not independently confirmed from the available data - administrators should update to the latest available version of the White Label CMS plugin via the WordPress plugin repository and verify the installed version exceeds 2.7.12. As a compensating control prior to patching, restrict administrator-level account grants to the minimum necessary personnel, particularly in multisite environments where site-administrator roles are more broadly distributed. Sites that have not explicitly disabled unfiltered_html are not vulnerable per the CVE description, so reverting that restriction (where operationally acceptable) eliminates the attack vector with the trade-off of restoring raw HTML capability to administrators. In WordPress multisite environments, audit super-admin assignments and monitor admin-settings activity logs for unauthorized changes to White Label CMS configuration fields.
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External POC / Exploit Code
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