CVE-2026-83561 Cross-site scripting in Complianz GDPR/CCPA Cookie Consent Banner
Unauthenticated attackers can inject scripts via comments if admins approve them and specific cookie blockers are enabled, leading to XSS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-83561?
CVE-2026-83561 is a high-severity cross-site scripting vulnerability in Complianz GDPR/CCPA Cookie Consent Banner, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Complianz GDPR/CCPA Cookie Consent Banner plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via Elementor Cookie Blocker Regex in all versions up to, and including, 7.5.4 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 an administrator to approve the attacker's comment, and the site must have both the Elementor plugin installed and Complianz configured with the Twitter or Facebook cookie/script blocker enabled.
Weakness: CWE-79
Which versions are affected by CVE-2026-83561?
How do I fix CVE-2026-83561?
No fix has been published for CVE-2026-83561 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-83561 being exploited?
There is no known exploitation of CVE-2026-83561 in the wild and no public exploit code.
Sources
Also known as GHSA-99qh-wmgh-87j4.