Login Request a demo
High severity · published Jun 12, 2026
CVE-2026-47366
Improper verification of access permissions when modifying permissions through the Administration Control Panel (ACP) allowed an authenticated administrator to grant permissions…
7.2
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
phpBB · phpBB
3.3.0 through 3.3.16 · source: vendor
Affected product
PH
phpBB
phpBB
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47366
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47366
www.phpbb.com
https://www.phpbb.com/community/viewtopic.php?t=2672170
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