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CVE-2026-48612

Quick assessment

Affected
phpBB phpBB
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

phpBB是phpbb团队开源的一套基于PHP的Web论坛软件。 phpBB存在跨站请求伪造漏洞，该漏洞源于OAuth实现中状态验证不当，可能导致攻击者操控身份认证流程并将受害者账户链接到攻击者控制的账户，从而实现未授权账户关联和潜在的账户接管。

AI Predicted 8.6 Difficulty: Easy EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
phpBB phpBB 3.3.0≤ 3.3.16 affected
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I. Basic Information for CVE-2026-48612

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
phpBB 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
phpBB是phpbb团队开源的一套基于PHP的Web论坛软件。 phpBB存在跨站请求伪造漏洞，该漏洞源于OAuth实现中状态验证不当，可能导致攻击者操控身份认证流程并将受害者账户链接到攻击者控制的账户，从而实现未授权账户关联和潜在的账户接管。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
phpBB phpBB 3.3.0 ~ 3.3.16 -

II. Public POCs for CVE-2026-48612

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III. Intelligence Information for CVE-2026-48612

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Vendor Advisories for CVE-2026-48612 (1)

Same Patch Batch · phpBB · 2026-06-12 · 4 CVEs total

CVE-2026-47366 phpBB 权限许可和访问控制问题漏洞
CVE-2026-48611 phpBB 授权问题漏洞
CVE-2026-48613 phpBB SQL注入漏洞

IV. Related Vulnerabilities

Same product: phpBB
Same vendor: phpBB
Same weakness: CWE-352

V. Comments for CVE-2026-48612

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