CVE-2026-48612 — HIGH (8.0)

Vulnerability 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.

CVSS Score

8.0

HIGH

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-352

References

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

FAQ

What is CVE-2026-48612?

CVE-2026-48612 is a vulnerability with a CVSS score of 8.0 (HIGH). 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 ...

How severe is CVE-2026-48612?

CVE-2026-48612 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-48612?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.