Weblizar The School Management Plugin up to 5.4 on WordPress AJAX handlers order[0][dir] sql injection

Summaryinfo

A vulnerability was found in Weblizar The School Management Plugin up to 5.4 and classified as critical. This vulnerability affects unknown code of the component AJAX handlers. Executing a manipulation of the argument order[0][dir] can lead to sql injection. This vulnerability appears as CVE-2026-9767. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in Weblizar The School Management Plugin up to 5.4 and classified as critical. This vulnerability affects an unknown code of the component AJAX handlers. The manipulation of the argument order[0][dir] with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The The School Management – Education & Learning ERP plugin for WordPress is vulnerable to generic SQL Injection via 'order[0][dir]' Parameter in all versions up to, and including, 5.4 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with custom-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This vulnerability is replicated across seven or more AJAX handlers including wlsm-fetch-staff-classes, wlsm-fetch-notices, wlsm-fetch-subjects, wlsm-fetch-inquiries, wlsm-fetch-staff-employee, and wlsm-fetch-payments, and the missing nonce verification on several of these handlers also enables CSRF-chained exploitation.

The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-9767 since 05/27/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/16/2026). The MITRE ATT&CK project declares the attack technique as T1505.

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-2026-59904). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Weblizar

Name

• The School Management Plugin

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Once again VulDB remains the best source for vulnerability data.

Discussion