CVE-2026-48611

9.8 criticalEPSS 3.9%

Critical (9.8). EPSS 3.9% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 3.9% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2026-06-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://www.phpbb.com/community/viewtopic.php?t=2672170

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