Décio Brandão

Décio Brandão is a security researcher credited with 4 disclosed vulnerabilities in the WordSec WordPress vulnerability database, ranked #907 of 3,823 contributors. The disclosure was published in 2026.

Their research concentrates on Authorization Bypass Through User-Controlled Key, which accounts for 1 of their findings (25%). Other recurring categories include Cross-Site Scripting, Improper Authentication. The average CVSS score across these disclosures is 8.5, peaking at 9.8. Severity breakdown: 1 critical and 3 high.

The most affected software includes ByteCoreStack (1), Opti-Behavior (1), TrueBooker (1), across 4 distinct plugins, themes and core versions in total.

All 4 disclosed issues have since received a vendor fix. The most severe finding, "TrueBooker <= 1.2.6 - Unauthenticated Authorization Bypass Through User-Controlled Key to Account Takeover to 'truebooker_wp_user_id' Parameter", scores 9.8 out of 10.

2026

Critical

High

Medium

Low

Global Rank

#907

of 3,823 researchers

Vulns

Critical1

High3

Medium0

Low0

Affected Assets

4plugins

Avg CVSS

8.5

Average score of vulnerabilities

Researcher Submissions

4 records


2026-10-15 19:09	Vulnity Security <= 1.4.3 - Unauthenticated Authentication Bypass to Administrator via Exposed Pairing Credentials Vulnity Security <= 1.4.3	`CVE-2026-75903`	8.1 High	Décio Brandão	Yes
2026-10-15 16:29	Opti-Behavior <= 1.9.2.1 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'targetUrl' Parameter Opti-Behavior <= 1.9.2.1	`CVE-2026-95686`	7.2 High	Décio Brandão	Yes
2026-09-30 19:31	ByteCoreStack <= 1.2.3 - Authenticated (Subscriber+) Privilege Escalation via wp_update_user_meta MCP Tool ByteCoreStack <= 1.2.3	`CVE-2026-19807`	8.8 High	Décio Brandão	Yes
2026-08-18 14:52	TrueBooker <= 1.2.6 - Unauthenticated Authorization Bypass Through User-Controlled Key to Account Takeover to 'truebooker_wp_user_id' Parameter TrueBooker <= 1.2.6	`CVE-2026-18315`	9.8 Critical	Décio Brandão	Yes

Showing 1–4 of 4 reports