CVE-2026-15281
Received Received - Intake

Second-Order SQL Injection in User Access Manager WordPress Plugin

Publication date: 2026-08-05

Last updated on: 2026-08-05

Assigner: Wordfence

Description
The User Access Manager plugin for WordPress is vulnerable to Second-Order SQL Injection via the 'id' parameter of the wp_ajax_save-attachment-compat AJAX action in versions up to, and including, 2.3.12. This is due to insufficient validation on the objectId value stored in the saveAjaxAttachmentData() function and subsequent unparameterized concatenation in the addQueryExcludedPostFilter() function — the stored value is later retrieved from the database and used as an array key, then directly imploded into a SQL NOT IN() clause without integer casting or prepared statements. This makes it possible for authenticated attackers, with subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

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Meta Information

Published
2026-08-05
Last Modified
2026-08-05
Generated
2026-08-05
AI Q&A
2026-08-05
EPSS Evaluated
N/A
NVD
CVE-2026-15281
EUVD
EUVD-2026-53179

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

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Executive Summary

The User Access Manager plugin for WordPress has a Second-Order SQL Injection vulnerability in versions up to 2.3.12. It occurs via the 'id' parameter in the wp_ajax_save-attachment-compat AJAX action. The flaw arises from insufficient validation of the objectId value, which is later used in a SQL NOT IN() clause without proper sanitization or prepared statements. This allows authenticated attackers with subscriber-level access to inject malicious SQL queries and extract sensitive database information.

Detection Guidance

This vulnerability requires authenticated access and involves SQL injection via the User Access Manager plugin. Detection may involve checking for suspicious database queries or unusual activity in WordPress logs. No specific commands are provided in the context.

Impact Analysis

If you use the vulnerable User Access Manager plugin, attackers could exploit this to steal sensitive data from your WordPress database, such as user credentials, personal information, or other confidential data. The attack requires only subscriber-level access, making it accessible to low-privilege users.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR and HIPAA requirements for protecting personal and health information. Organizations using the plugin may face compliance breaches, legal penalties, and reputational damage if sensitive data is compromised through this SQL injection flaw.

Mitigation Strategies

Immediately update the User Access Manager plugin to the latest version beyond 2.3.12. If an update is unavailable, consider disabling the plugin until a patch is released. Restrict subscriber-level access to sensitive areas of your WordPress site.

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