CVE-2026-97339: Complianz GDPR/CCPA Cookie Consent Banner <= 7.5.5 - Unauthenticated Stored Cross-Site Scripting via Comment Content via yotu-wp Cookie-Blocker Filter

Q: What conditions are required for exploitation?

An unauthenticated attacker must submit a crafted comment that is approved. The malicious script executes only when a visitor accesses the page containing that approved comment.

Q: Is an unmodified installation affected?

The vulnerable behavior is in Complianz's yotu-wp cookie-blocker output filter. The provided data does not establish whether that integration is enabled or reached in every default installation.

Q: What should be prioritized if an update cannot be applied immediately?

Prevent approval of untrusted comments, because the payload must be approved before it can execute for visitors. Review already approved comments on pages where the affected filter may be applied and remove suspicious content.

Q: How can an organization determine whether it may be affected?

Installations running Complianz GDPR/CCPA Cookie Consent Banner version 7.5.5 or earlier are within the affected range. Exposure additionally depends on approved crafted comments being processed by the yotu-wp cookie-blocker filter.

Published Oct 16, 2026

Updated

The Complianz GDPR/CCPA Cookie Consent Banner plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via yotu-wp Cookie-Blocker Filter in all versions up to, and including, 7.5.5 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. The exploit bypasses WordPress's wpkses comment sanitization because the payload uses only allow-listed tags and hides executable tokens inside quoted attribute values as plain text; the XSS is only realized when Complianz's own output-buffer filter performs strreplace() rewrites that break out of the attribute context, and requires the comment to be approved before it executes for visitors.

Affected Software

1 affected component

Complianz GDPR/CCPA Cookie Consent Banner<=7.5.5

Event History

Oct 16, 2026

CVE Published

via MITRE·03:38 AM

Data Sourced

via MITRE·03:38 AM

DescriptionSeverityWeakness

Frequently Asked Questions

What conditions are required for exploitation?

An unauthenticated attacker must submit a crafted comment that is approved. The malicious script executes only when a visitor accesses the page containing that approved comment.

Is an unmodified installation affected?

The vulnerable behavior is in Complianz's yotu-wp cookie-blocker output filter. The provided data does not establish whether that integration is enabled or reached in every default installation.

What should be prioritized if an update cannot be applied immediately?

Prevent approval of untrusted comments, because the payload must be approved before it can execute for visitors. Review already approved comments on pages where the affected filter may be applied and remove suspicious content.

How can an organization determine whether it may be affected?

Installations running Complianz GDPR/CCPA Cookie Consent Banner version 7.5.5 or earlier are within the affected range. Exposure additionally depends on approved crafted comments being processed by the yotu-wp cookie-blocker filter.

CVE-2026-97339: Complianz GDPR/CCPA Cookie Consent Banner <= 7.5.5 - Unauthenticated Stored Cross-Site Scripting via Comment Content via yotu-wp Cookie-Blocker Filter

Affected Software

Event History

Frequently Asked Questions

What conditions are required for exploitation?

Is an unmodified installation affected?

What should be prioritized if an update cannot be applied immediately?

How can an organization determine whether it may be affected?

Company

Resources

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Frequently Asked Questions

What conditions are required for exploitation?

Is an unmodified installation affected?

What should be prioritized if an update cannot be applied immediately?

How can an organization determine whether it may be affected?