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CVE-2026-48612

HIGH
8
CVSS Score
Published: June 12, 2026 at 02:27 AM UTC
Updated: June 17, 2026 at 10:55 AM UTC
1 product affected across 1 vendorphpBB

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Severity
HIGH8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

phpBB· Phpbb Group
60%
3.3.0 ≤ v ≤ 3.3.163.3.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8HIGHhackerone
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-352

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