CVE-2026-48611
CRITICAL 9.8EPSS 2.9%
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
- phpBB
- CVSS v3.0 HACKERONE
- 9.8 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 2.89% chance of exploitation in the next 30 days, 87th percentile
- Nuclei
- critical · CWE-287
- Published
- 2026-06-12
Proof-of-concept exploits (3)
- wanmywan/CVE-2026-48611-phpBB0★ · 2026-07-07
- Ethicalgrey/phpBB-CVE-2026-486110★ · 2026-08-30
- lxdwnpiper/CVE-2026-48611-phpBB0★ · 2026-07-07