CVE

CVE-2026-48611

9.8

CVSScritical

Exploitable remotely over the internet · no authentication required.

Description

Improper authentication checks in the OAuth implementation allow account hijacking even when OAuth is not configured or enabled leading to unauthorized access in default installations.

Attack Vector

Network

Privileges Req.

None

User Interaction

None

phpbb

Updated Sep 18, 2026View on NVD →

S4E scanner

criticalProduct Based Web Vulnerabilities~10 seconds

CVE-2026-48611 Scanner

CVE-2026-48611 Scanner - Authentication Bypass vulnerability in phpBB

Used 3.4k times · 5.9k assets checked · domain, subdomain, ipv4

Scanner page →Run scanner

CVE history: phpbb

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