WPLP Cookie Consent regionArray permits stored XSS

WPLP Cookie Consent through 4.3.5 stores the regionArray value without adequate sanitization and later renders it without sufficient escaping. The affected AJAX handler lacks a capability and nonce check; the CNA describes unauthenticated injection and also confirms that any Subscriber can overwrite the setting. Successful exploitation requires the non-default Google Consent Mode support option to be enabled. The action name, output sink, and payload are not disclosed.

CVE / CNA score 7.2 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: WPLP Cookie Consent – Cookie Banner & Consent Management for GDPR, CCPA & Google Consent Mode
Plugin slug: gdpr-cookie-consent
Affected: <= 4.3.5
Safe version: See mitigation notes
Published: Aug 15, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Aug 15, 2026 and is one of 22 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified in the authoritative record. Update when a confirmed patch is available; until then, disable Google Consent Mode support or the plugin when warranted, inspect consent settings, and invalidate privileged sessions if affected output was viewed. The official upstream changelog lists version 4.4.0, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Cookie Banner for GDPR / CCPA – WPLP Cookie Consent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'regionArray' parameter in all versions up to, and including, 4.3.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires that the site administrator has enabled the 'Support Google Consent Mode (GCM)' setting, which is disabled by default. Additionally, the AJAX handler performs no nonce or capability check, allowing any authenticated user including those with Subscriber-level access to overwrite the affected plugin setting.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

Primary and upstream sources

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