boonebgorges BuddyPress Groupblog Plugin up to 1.9.3 on WordPress privileges management

Summaryinfo

A vulnerability labeled as critical has been found in boonebgorges BuddyPress Groupblog Plugin up to 1.9.3 on WordPress. This issue affects some unknown processing. Such manipulation of the argument groupblog-blogid/default-member/groupblog-silent-add leads to privileges management. This vulnerability is traded as CVE-2026-5144. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in boonebgorges BuddyPress Groupblog Plugin up to 1.9.3 on WordPress and classified as critical. Affected by this issue is an unknown part. The manipulation of the argument groupblog-blogid/default-member/groupblog-silent-add 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 confidentiality, integrity, and availability. CVE summarizes:

The BuddyPress Groupblog plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.9.3. This is due to the group blog settings handler accepting the `groupblog-blogid`, `default-member`, and `groupblog-silent-add` parameters from user input without proper authorization checks. The `groupblog-blogid` parameter allows any group admin (including Subscribers who create their own group) to associate their group with any blog on the Multisite network, including the main site (blog ID 1). The `default-member` parameter accepts any WordPress role, including `administrator`, without validation against a whitelist. When combined with `groupblog-silent-add`, any user who joins the attacker's group is automatically added to the targeted blog with the injected role. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate any user (including themselves via a second account) to Administrator on the main site of the Multisite network.

The weakness was shared by Nabil Irawan. The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-5144 since 03/30/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/11/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-21658). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• boonebgorges

Name

• BuddyPress Groupblog Plugin

Version

• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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