CVE Feed

    Dashboard / CVE / CVE-2011-10018

    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.

    Published:Aug 13, 2025
    Last Modified:Apr 7, 2026
    EPS:Aug 13, 2025
    EPSS Score:0.53002
    CVSS Score:9.8

    Affected Products

    Vendor
    Mybb
    Product
    Mybb

    Exploits

    https://www.exploit-db.com/exploits/17949https://www.exploit-db.com/exploits/17949

    Related CVEs

    CVE-2026-45118 (CVSS 9.3) — MyBB is free and open source forum software. Prior to 1.8.40, the Contact module does not validate a redirect …
    CVE-2026-45117 (CVSS 9.8) — MyBB is free and open source forum software. From 1.8.13 until 1.8.40, the installer module does not properly …
    CVE-2026-45129 (CVSS 4.6) — MyBB is free and open source forum software. Prior to 1.8.40, the Admin CP Recovery Codes module does not vali…
    CVE-2026-45124 (CVSS 4.3) — MyBB is free and open source forum software. Prior to 1.8.40, the Mod CP Report Center does not check permissi…
    CVE-2026-45120 (CVSS 5.4) — MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not verify private even…
    CVE-2026-47245 (CVSS 4.3) — MyBB is free and open source forum software. Prior to 1.8.40, the User CP Buddy/Ignore List component does not…
    CVE-2026-45734 (CVSS 5.3) — MyBB is free and open source forum software. Prior to 1.8.40, the built-in CAPTCHA does not consistently enfor…
    CVE-2026-45125 (CVSS 5.3) — MyBB is free and open source forum software. Prior to 1.8.40, the Email User controller does not sanitize send…
    CVE-2026-45122 (CVSS 4.3) — MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not validate moderation…
    CVE-2026-45119 (CVSS 4.6) — MyBB is free and open source forum software. Prior to 1.8.40, the Admin CP UTF-8 Conversion module does not va…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High