What is CVE-2026-77116?

CVE-2026-77116 is a medium-severity vulnerability in Brave, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-23.

How severe is CVE-2026-77116?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Brave

CVE-2026-77116

Brave Popup Builder (slug: brave-popup-builder) has a broken access control issue in versions through 0.8.5. Any logged-in user - Subscriber or WooCommerce Customer is enough — can read popup content they shouldn't have access to by passing a post ID in the URL.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Unknown Brave

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-77116?: CVE-2026-77116 is a medium-severity vulnerability in Brave, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-23.
How severe is CVE-2026-77116?: Medium severity. CVSS v3 base score is 4.3 out of 10.