CVE-2011-10018
critical · 10myBB 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.
10
CVSS
2.0%
EPSS (exploit prob.)
80th
EPSS percentile
2025-08-13
Published
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weaknesses
CWE-94CWE-912
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| mybb | mybb | 1.6.4 |
Check a specific version with /api/v1/cve/match.
References
- https://blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb
- https://web.archive.org/web/20111015224948/http://secunia.com/advisories/46300/
- https://www.exploit-db.com/exploits/17949
- https://www.vulncheck.com/advisories/mybb-backdoor-arbitrary-command-execution
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb
- https://www.exploit-db.com/exploits/17949
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2011-10018