CVE-2026-48611
Quick assessment
Affected
phpBB phpBB
Exploitation
Public or AI PoC available; prioritize validation
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 3.3.0至3.3.16及之前版本存在授权问题漏洞，该漏洞源于OAuth实现中的身份验证检查不当，可能导致账户劫持，导致默认安装中的未授权访问。
Public Exploits 1
Nuclei · 1
CVE-2026-48611.yaml [template]
In-the-Wild Activity Observed
github_trending · low
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I. Basic Information for CVE-2026-48611
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Improper authentication checks in the OAuth implementation allow account hijacking even when OAuth is not configured or enabled leading to unauthorized access in default installations.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
phpBB 授权问题漏洞
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 3.3.0至3.3.16及之前版本存在授权问题漏洞，该漏洞源于OAuth实现中的身份验证检查不当，可能导致账户劫持，导致默认安装中的未授权访问。
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
II. Public POCs for CVE-2026-48611
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | phpBB before 3.3.17 contains an authentication bypass vulnerability in the login-link feature. By setting the auth_provider query parameter to "apache", an unauthenticated attacker can bypass password verification and log in as any user, including administrators. The Apache auth provider trusts the Basic authentication header username without password verification, as it assumes Apache handles authentication upstream. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-48611.yaml | POC Details |
AI-Generated POC
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Vendor Advisories for CVE-2026-48611 (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-2026-48613 | phpBB SQL注入漏洞 | |
| CVE-2026-48612 | phpBB 跨站请求伪造漏洞 |
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Same weakness: CWE-287
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V. Comments for CVE-2026-48611
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