Back to overview

CVE-2026-48611

CRITICAL
9.8
CVSS 3.0
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.

Metadata

CVE ID
CVE-2026-48611
State
PUBLISHED
Assigner
hackerone
Reserved
2026-05-22 15:00 UTC
Published
2026-06-12 02:27 UTC
Last updated
2026-06-12 12:55 UTC
Primary CWE
CWE-287
CWE-287 Improper Authentication - Generic
Vendor / Product
phpBB / phpBB
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
phpBB phpBB — 3.3.0 ≤ 3.3.16
Weakness (CWE)
CWESourceDescription
CWE-287 cna CWE-287 Improper Authentication - Generic
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.0 cna CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References (1)
Back to overview