CVE-2026-97339: Complianz GDPR/CCPA Cookie Consent Banner stored XSS in comments

CVE-2026-97339 · Severity: high · CVSS 7.2 · Published 2026-10-16

Complianz is a WordPress plugin that manages cookie consent and GDPR compliance for websites. An unauthenticated attacker can inject malicious scripts through approved comments that execute when visitors view the page, potentially stealing session data or redirecting users to malicious sites. The vulnerability exploits a gap between WordPress's built-in protections and the plugin's custom filtering logic.

Vendors: Complianz.

Quick answers

Is CVE-2026-97339 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-97339 being exploited in the wild.
How severe is CVE-2026-97339?
High severity, with a CVSS score of 7.2, published 16 October 2026.
Which products and versions are affected?
Complianz GDPR/CCPA Cookie Consent Banner up to and including 7.5.5.
Is there a fix for CVE-2026-97339?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-97339 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-97339?
Check whether you run Complianz GDPR/CCPA Cookie Consent Banner at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

Stored cross-site scripting via insufficient input sanitization and output escaping in the yotu-wp Cookie-Blocker Filter component. An unauthenticated attacker can craft a comment with an allow-listed tag containing a payload hidden in quoted attribute values; WordPress's wp_kses allows the comment, but the plugin's str_replace() filter rewrites the attribute context and exposes the executable script. The XSS requires comment approval before execution.

Affected products

  • Complianz GDPR/CCPA Cookie Consent Banner up to and including 7.5.5

Timeline

  • 2026-10-16: disclosed

References

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