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.
Published: 2026-06-12
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 12 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 12 Jun 2026 05:00:00 +0000

Type Values Removed Values Added
First Time appeared Phpbb
Phpbb phpbb
Vendors & Products Phpbb
Phpbb phpbb

Fri, 12 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Title Improper Authentication in phpBB OAuth Enables Account Hijacking

Fri, 12 Jun 2026 03:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-287
References
Metrics cvssV3_0

{'score': 9.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Phpbb Phpbb
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-06-12T12:55:19.663Z

Reserved: 2026-05-22T15:00:09.276Z

Link: CVE-2026-48611

cve-icon Vulnrichment

Updated: 2026-06-12T12:55:16.484Z

cve-icon NVD

Status : Deferred

Published: 2026-06-12T04:17:08.180

Modified: 2026-06-12T16:15:57.387

Link: CVE-2026-48611

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-12T04:45:05Z

Weaknesses