stiofansisland Events Calendar for GeoDirectory Plugin up to 2.3.28 on WordPress ajax_ayi_action Type privileges management

Summaryinfo

A vulnerability, which was classified as critical, has been found in stiofansisland Events Calendar for GeoDirectory Plugin up to 2.3.28 on WordPress. The impacted element is the function ajax_ayi_action. This manipulation of the argument Type causes privileges management. This vulnerability is registered as CVE-2026-11616. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in stiofansisland Events Calendar for GeoDirectory Plugin up to 2.3.28 on WordPress. It has been declared as critical. Affected by this vulnerability is the function ajax_ayi_action. The manipulation of the argument type with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Events Calendar for GeoDirectory plugin for WordPress is vulnerable to Privilege Escalation in versions up to and including 2.3.28. This is due to the ajax_ayi_action() handler only applying strip_tags(esc_sql()) — with no allow-list — to the attacker-controlled $_POST['type'] and $_POST['postid'] values before forwarding them to update_ayi_data(), which calls update_user_meta($current_user->ID, $rsvp_args['type'], $posts). By passing type=wp_capabilities and postid=administrator, an attacker writes ['subscriber'=>true,'administrator'=>'administrator'] into their own wp_capabilities user meta; WP_User::get_role_caps() then treats the 'administrator' array key as an active role on the next request. This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to Administrator.

The weakness was published by Nguyen Hung. It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-11616 since 06/08/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 2.3.28 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Calendar Software

Vendor

• stiofansisland

Name

• Events Calendar for GeoDirectory Plugin

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
• 2.3.13
• 2.3.14
• 2.3.15
• 2.3.16
• 2.3.17
• 2.3.18
• 2.3.19
• 2.3.20
• 2.3.21
• 2.3.22
• 2.3.23
• 2.3.24
• 2.3.25
• 2.3.26
• 2.3.27
• 2.3.28

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion