CVE-2026-48612
High
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.
SeverityHigh
CVSS8.0
Exploit probability—
Product
phpBB
PublishedJun 12, 2026
First seenJun 12, 2026
Weakness typeCWE-352Cross-site request forgery (CSRF)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| phpBB phpBB | 3.3.0 ≤ v ≤ 3.3.16 | — |
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