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CVE Vulnerability Details :
CVE-2026-48611
PUBLISHED
More InfoOfficial Page
Assigner-hackerone
Assigner Org ID-36234546-b8fa-4601-9d6f-f4e334aa8ea1
View Known Exploited Vulnerability (KEV) details
Published At-12 Jun, 2026 | 02:27
Updated At-12 Jun, 2026 | 12:55
Rejected At-
▼CVE Numbering Authority (CNA)

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.

Affected Products
Vendor
phpBB
Product
phpBB
Default Status
unaffected
Versions
Affected
  • From 3.3.0 through 3.3.16 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-287CWE-287 Improper Authentication - Generic
Type: CWE
CWE ID: CWE-287
Description: CWE-287 Improper Authentication - Generic
Metrics
VersionBase scoreBase severityVector
3.09.8CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.0
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.phpbb.com/community/viewtopic.php?t=2672170
N/A
Hyperlink: https://www.phpbb.com/community/viewtopic.php?t=2672170
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found