Critical severity9.8NVD Advisory· Published Aug 13, 2025· Updated Jun 16, 2026
CVE-2011-10018
CVE-2011-10018
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- myBB Group/Forum Softwarev5Range: 1.6.4
Patches
Vulnerability mechanics
References
5- www.exploit-db.com/exploits/17949nvdExploit
- blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/nvdVendor Advisory
- web.archive.org/web/20111015224948/http://secunia.com/advisories/46300/nvdThird Party Advisory
- www.vulncheck.com/advisories/mybb-backdoor-arbitrary-command-executionnvdThird Party Advisory
- raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rbnvdProduct
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