XenForo up to 2.3.12 ACP Cache-Rebuild Dispatcher privileges management

Summaryinfo

A vulnerability described as problematic has been identified in XenForo up to 2.3.12. The impacted element is an unknown function of the component ACP Cache-Rebuild Dispatcher. Such manipulation leads to privileges management. This vulnerability is traded as CVE-2026-73317. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in XenForo up to 2.3.12. It has been rated as problematic. Affected by this issue is an unknown code block of the component ACP Cache-Rebuild Dispatcher. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is integrity. CVE summarizes:

XenForo before 2.3.13 contains a missing authorization vulnerability in the ACP cache-rebuild dispatcher that allows limited administrators with only the rebuildCache permission to perform unauthorized approval queue actions by supplying an arbitrary job class and actor user ID in the POST body. Attackers can invoke the approval queue job under any user identity to approve queued user registrations without holding the required approval-queue or moderator permissions, causing the moderation log to attribute actions to an impersonated account.

The advisory is shared for download at xenforo.com. This vulnerability is handled as CVE-2026-73317 since 08/11/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 2.3.13 eliminates this vulnerability.

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Productinfo

Name

• XenForo

Version

• 2.3.0
• 2.3.1
• 2.3.2
• 2.3.3
• 2.3.4
• 2.3.5
• 2.3.6
• 2.3.7
• 2.3.8
• 2.3.9
• 2.3.10
• 2.3.11
• 2.3.12

CPE 2.3info

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CPE 2.2info

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