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    CVE-2026-65885

    Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 - File upload methods allows authenticated attackers to upload arbitrary files. Turns into an authenticated RCE if combined with CVE-2026-65884 as the required account can be created by the attacker.

    Published:Jul 29, 2026
    Last Modified:Jul 29, 2026
    EPS:Jul 29, 2026
    EPSS Score:
    CVSS Score:9.4

    Affected Products

    Vendor
    Balbooa.com
    Product
    Gridbox Extension For Joomla

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

    Related CVEs

    CVE-2026-65947 (CVSS 7.3) — Joomla Extension - balbooa.com - Various CSRF vectors in the admin interface in Gridbox < 2.20.2…
    CVE-2026-65888 (CVSS 10) — Joomla Extension - balbooa.com - Account takeover vulnerability in Gridbox < 2.20.2 - The socialLogin method a…
    CVE-2026-65887 (CVSS 10) — Joomla Extension - balbooa.com - Unauthenticated arbitrary password reset in Gridbox < 2.20.2 - The resetPassw…
    CVE-2026-65886 (CVSS 9.2) — Joomla Extension - balbooa.com - Unauthenticated arbitrary file read in Gridbox < 2.20.2 - The photo viewer al…
    CVE-2026-65890 (CVSS 9.2) — Joomla Extension - balbooa.com - Unauthenticated SQL injection in Gridbox < 2.20.2 - Multiple SQLi vectors all…
    CVE-2026-66489 (CVSS 5.3) — Joomla Extension - balbooa.com - Various unauthenticated file system disclosure in Gridbox < 2.20.2…
    CVE-2026-66488 (CVSS 5.3) — Joomla Extension - balbooa.com - Payment bypass in Gridbox < 2.20.2…
    CVE-2026-65889 (CVSS 9.2) — Joomla Extension - balbooa.com - Unauthenticated recursive directory deletion < 2.20.2 - The generateNewApp me…
    CVE-2026-66490 (CVSS 6.1) — Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2…
    CVE-2026-65884 (CVSS 10) — Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2 - The registration method allows use…

    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