Description
Improper state verification in the OAuth implementation could allow an attacker to manipulate the authentication flow and cause a victim’s account to be linked to an attacker-controlled account. This can result in unauthorized account linking and potential account takeover.
References (1)
Core 1
Core References
Scores
CVSS v3
8.0
EPSS
0.0012
EPSS Percentile
2.2%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-352
Status
published
Products (1)
phpBB/phpBB
3.3.0 - 3.3.16
Published
Jun 12, 2026
Tracked Since
Jun 12, 2026