CVE-2026-65884: CWE-284 Improper Access Control in balbooa.com Gridbox extension for Joomla
Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2 - The registration method allows users provided usergroup IDs, allowing unauthenticated actors to register new accounts with administrative permissions.
AI Analysis
Technical Summary
CVE-2026-65884 is an improper access control vulnerability (CWE-284) in the balbooa.com Gridbox extension for Joomla. The registration method improperly accepts usergroup IDs from unauthenticated actors, enabling them to create accounts with administrative privileges. This vulnerability affects all versions from 1.0.0 up to and including 2.20.1. The CVSS 4.0 base score is 10.0, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Exploitation allows unauthenticated attackers to escalate privileges by registering accounts with administrative rights. This compromises the confidentiality, integrity, and availability of the Joomla site using the vulnerable Gridbox extension. The attacker gains full administrative control, potentially leading to complete site takeover.
Mitigation Recommendations
No official patch or remediation is currently confirmed. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the registration functionality or disable it if possible to prevent unauthorized administrative account creation.
CVE-2026-65884: CWE-284 Improper Access Control in balbooa.com Gridbox extension for Joomla
Description
Joomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2 - The registration method allows users provided usergroup IDs, allowing unauthenticated actors to register new accounts with administrative permissions.
CVSS v4.0
Score 10.0critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-65884 is an improper access control vulnerability (CWE-284) in the balbooa.com Gridbox extension for Joomla. The registration method improperly accepts usergroup IDs from unauthenticated actors, enabling them to create accounts with administrative privileges. This vulnerability affects all versions from 1.0.0 up to and including 2.20.1. The CVSS 4.0 base score is 10.0, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Exploitation allows unauthenticated attackers to escalate privileges by registering accounts with administrative rights. This compromises the confidentiality, integrity, and availability of the Joomla site using the vulnerable Gridbox extension. The attacker gains full administrative control, potentially leading to complete site takeover.
Mitigation Recommendations
No official patch or remediation is currently confirmed. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the registration functionality or disable it if possible to prevent unauthorized administrative account creation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Joomla
- Date Reserved
- 2026-07-23T09:17:01.409Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a69f4299c2644c7f88240b5
Added to database: 07/29/2026, 12:38:01 UTC
Last enriched: 07/29/2026, 12:52:19 UTC
Last updated: 07/29/2026, 13:22:41 UTC
Views: 27
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.