CVE-2026-48612Improper 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.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.0 HIGH (v3.0, CNA)CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-352
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- hackerone
- NVD analysis
- Deferred
- Record last updated
- Jun 12, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
phpBB phpBB phpbb:phpbb (from the name) | from 3.3.0 through 3.3.16 | CNA record |
References
- https://www.phpbb.com/community/viewtopic.php?t=2672170
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.