# CVE-2026-83561: Complianz GDPR/CCPA Cookie Consent Banner stored cross-site scripting

Source: https://junglewise.ai/threats/cve-2026-83561-complianz-gdpr-ccpa-cookie-consent-banner-stored-cross-site  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-18. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-83561 · Severity: high · CVSS 7.2 · Published 2026-09-18

Complianz is a popular WordPress plugin that helps websites manage cookie consent and comply with privacy regulations like GDPR and CCPA. The plugin is vulnerable to stored cross-site scripting (XSS), which allows attackers to inject malicious scripts into website pages. These scripts execute when users visit the affected pages, potentially stealing session data, credentials, or redirecting users to phishing sites. The attack requires admin approval of a malicious comment and both Elementor and specific cookie blockers to be enabled.

Vendors: [Complianz](https://junglewise.ai/threats/vendors/complianz).

## Quick answers

**Is CVE-2026-83561 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-83561 being exploited in the wild.

**How severe is CVE-2026-83561?** High severity, with a CVSS score of 7.2, published 18 September 2026.

**Which products and versions are affected?** Complianz GDPR/CCPA Cookie Consent Banner up to 7.5.4.

**Is there a fix for CVE-2026-83561?** 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-2026-83561 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-83561?** 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

The vulnerability is a stored cross-site scripting (XSS) flaw in the Elementor Cookie Blocker regex component, stemming from insufficient input sanitization and output escaping of user-supplied comment content. An unauthenticated attacker can inject arbitrary JavaScript code in website comments; when an administrator approves the malicious comment, the script is stored in the database and executes in the browsers of all subsequent visitors. Exploitation requires the site to have both Elementor plugin installed and Complianz configured with Twitter or Facebook cookie/script blocker enabled. The vulnerability affects all versions up to and including 7.5.4. Patches are expected to be available in newer versions addressing the sanitization and escaping gaps.

## Affected products

- Complianz GDPR/CCPA Cookie Consent Banner up to 7.5.4

## Timeline

- 2026-09-18: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/complianz-gdpr/tags/7.5.3.1/class-cookie-blocker.php](https://plugins.trac.wordpress.org/browser/complianz-gdpr/tags/7.5.3.1/class-cookie-blocker.php)
- [https://plugins.trac.wordpress.org/browser/complianz-gdpr/tags/7.5.3.1/class-cookie-blocker.php](https://plugins.trac.wordpress.org/browser/complianz-gdpr/tags/7.5.3.1/class-cookie-blocker.php)

## Related threats

- [Complianz GDPR/CCPA Cookie Consent Banner stored XSS in comments](https://junglewise.ai/threats/cve-2026-97339-the-complianz-gdpr-ccpa-cookie-consent-banner-plugin-for)