CVE-2011-10018

myBB version 1.6.4 was distributed with an unauthorized backdoor embedded in the source code. The backdoor allowed remote attackers to execute arbitrary PHP code by injecting payloads into a specially crafted collapsed cookie. This vulnerability was introduced during packaging and was not part of the intended application logic. Exploitation requires no authentication and results in full compromise of the web server under the context of the web application.

• CWE-94
• CWE-912

• https://blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/Vendor Advisory
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rbProduct
• https://web.archive.org/web/20111015224948/http://secunia.com/advisories/46300/Third Party Advisory
• https://www.exploit-db.com/exploits/17949Exploit
• https://www.vulncheck.com/advisories/mybb-backdoor-arbitrary-command-executionThird Party Advisory
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rbProduct
• https://www.exploit-db.com/exploits/17949Exploit

Published

Aug 13, 2025

Last Modified

Jun 16, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2011-10012NetOp (now part of Impero Software) Remote Control Client v9…8.4
• CVE-2011-10013Traq versions 2.0 through 2.3 contain a remote code executio…10
• CVE-2011-10014GTA San Andreas Multiplayer (SA-MP) server version 0.3.1.1 i…8.7
• CVE-2011-10015Cytel Studio version 9.0 and earlier is vulnerable to a stac…9.3
• CVE-2011-10016Real Networks Netzip Classic version 7.5.1.86 is vulnerable …9.3
• CVE-2011-10017Snort Report versions < 1.3.2 contains a remote command exec…10
• CVE-2011-10019Spreecommerce versions prior to 0.60.2 contains a remote com…9.8
• CVE-2011-1002avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 a…
• CVE-2011-10020Kaillera Server version 0.86 is vulnerable to a denial-of-se…8.7
• CVE-2011-10021Magix Musik Maker 16 is vulnerable to a stack-based buffer o…8.4
• CVE-2011-10022SPlayer version 3.7 and earlier is vulnerable to a stack-bas…8.6
• CVE-2011-10023MJM QuickPlayer (also known as MJM Player) version 2010 cont…8.4