CVE-2026-47366

Privilege Escalation via Improper Permission Verification in phpBB ACP

Published Jun 12, 2026 CVSS 3.0 · 7.2 High EPSS < 1% KEV · Not listed
Description
Improper verification of access permissions when modifying permissions through the Administration Control Panel (ACP) allowed an authenticated administrator to grant permissions beyond the level authorized for their account, resulting in privilege escalation within the administrative interface.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Privilege Escalation via Improper Permission Verification in phpBB ACP
Type Values Removed Values Added
First Time appeared Phpbb
Phpbb phpbb
Vendors & Products Phpbb
Phpbb phpbb
Type Values Removed Values Added
Description Improper verification of access permissions when modifying permissions through the Administration Control Panel (ACP) allowed an authenticated administrator to grant permissions beyond the level authorized for their account, resulting in privilege escalation within the administrative interface.
Weaknesses CWE-284
References
Metrics cvssV3_0

{'score': 7.2, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
hackerone
Published
Updated
Jun 12, 2026, 12:26 PM
Reserved
May 19, 2026, 3:00 PM
Status
Deferred
Published
Jun 12, 2026, 4:17 AM
Modified
Jun 17, 2026, 10:54 AM