CVE-2026-76611 YOOtheme CVE debrief

Who should care

Administrators and users of Joomla Extension - yootheme.com, especially those with versions prior to 4.1.66, should be aware of this vulnerability and take necessary actions to mitigate the risk. This includes reviewing compensating controls for exposed systems while remediation is scheduled and verified, and checking relevant monitoring, detection, and logs for exposed assets that need extra review. Security teams and vulnerability management teams should prioritize this vulnerability given its CVSS score of 6.9 and potential for unauthenticated arbitrary directory listing. Operators of affected platforms should confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Those impacted should also consider asset inventory and rollback/change windows as part of their remediation strategy. Additionally, monitoring and detection capabilities should be reviewed to ensure they can identify potential exploitation attempts. Lastly, source tracking should be implemented to verify if the vulnerability has been exploited in the wild. IT teams responsible for patch management should also be informed about the need for updates. Overall, a coordinated effort across different teams is necessary to address this vulnerability effectively and minimize potential risks. The CVSS score indicates a medium severity level, but the actual impact can vary based on specific deployment contexts and existing security controls. Therefore, a thorough review of the vulnerability and its implications is necessary to ensure appropriate prioritization and response. This involves not only technical teams but also management and operational staff to ensure a comprehensive approach to mitigation and remediation. By taking a proactive and multi-faceted approach, organizations can better protect themselves against potential threats associated with this vulnerability. In addition to immediate mitigation efforts, long-term strategies should include regular security audits, enhanced monitoring, and continuous vulnerability management to reduce the risk of similar vulnerabilities in the future. This CVE highlights the importance of maintaining up-to-date

Technical summary

The CVE-2026-76611 vulnerability is related to an unauthenticated arbitrary directory listing issue in Joomla Extension - yootheme.com via the Gallery element in Zoo < 4.1.66. This issue has a CVSS score of 6.9 and is classified as MEDIUM severity. The vulnerability allows attackers to list directories without authentication, potentially leading to information disclosure and other security issues. To mitigate this vulnerability, it is recommended to update to version 4.1.66 or later and restrict access to the Gallery element in Zoo to authenticated users only. Additionally, monitoring for any suspicious activity related to directory listing should be implemented.

Defensive priority

Medium priority given the CVSS score of 6.9 and the potential for unauthenticated arbitrary directory listing.

Recommended defensive actions

• Verify the version of Joomla Extension - yootheme.com and update to version 4.1.66 or later if necessary.
• Restrict access to the Gallery element in Zoo to authenticated users only.
• Monitor for any suspicious activity related to directory listing.

Evidence notes

Evidence is limited; primary official records indicate an unauthenticated arbitrary directory listing vulnerability in Joomla Extension - yootheme.com via the Gallery element in Zoo < 4.1.66. Further verification is recommended. The CVE record was published on 2026-08-21T13:18:19.850Z and has not been modified since then. Defenders should verify affected product deployments, review official advisories, and plan vendor-supported updates or mitigations.

Official resources