CVE-2026-48611
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | phpbb |
| Product | phpbb |
| Published | Jun 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected Versions
phpBB / phpBB
3.3.0 ≤ 3.3.16