Cross-site Request Forgery (CSRF) Affecting phpbb/phpbb-core package, versions >=3.3.0, <3.3.17


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.12% (3rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-PHP-PHPBBPHPBBCORE-17398164
  • published22 Jun 2026
  • disclosed12 Jun 2026
  • creditUnknown

Introduced: 12 Jun 2026

CVE-2026-48612  (opens in a new tab)
CWE-352  (opens in a new tab)

How to fix?

Upgrade phpbb/phpbb-core to version 3.3.17 or higher.

Overview

Affected versions of this package are vulnerable to Cross-site Request Forgery (CSRF) via improper state verification in the OAuth authentication implementation. An attacker can cause a victim’s account to be linked to an attacker-controlled account by manipulating the authentication flow, potentially resulting in unauthorized account access and account takeover.

CVSS Base Scores

version 4.0
version 3.1