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VULNERABILITIES

CVE-2011-10018 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb CISA-ADPProduct
https://www.exploit-db.com/exploits/17949 CISA-ADPExploit
https://blog.mybb.com/2011/10/06/1-6-4-security-vulnerabilit/ [email protected]Vendor Advisory
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/mybb_backdoor.rb [email protected]Product
https://web.archive.org/web/20111015224948/http://secunia.com/advisories/46300/ [email protected]Third Party Advisory

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-912Hidden Functionality[email protected]
CWE-94Improper Control of Generation of Code ('Code Injection')[email protected]

Affected Products

ProductVersions
mybb mybb
1.6.4

CPE

  • cpe:2.3:a:mybb:mybb:1.6.4:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2011-10018
NVD Published Date:
Aug 13, 2025
NVD Last Modified:
Jun 16, 2026
Source:
[email protected]
CVE-2011-10018 Details - Not Deferred