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CVE-2026-15281

6.5 · MEDIUM

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…

Published Aug 5, 2026CWE-89EPSS 0.45%

Overview

CVE-2026-15281 is a medium-severity vulnerability. It was published on August 5, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/Controller/Backend/PostObjectController.php#L103Refplugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/Controller/Frontend/PostController.php#L275Refplugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/UserGroup/AbstractUserGroup.php#L147Refplugins.trac.wordpress.org/browser/user-access-manager/tags/2.3.12/src/UserGroup/AbstractUserGroup.php#L253Refplugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3607011%40user-access-manager%2Ftrunk%2Fsrc%2FController%2FFrontend%2FPostController.php&old=3447009%40user-access-manager%2Ftrunk%2Fsrc%2FController%2FFrontend%2FPostController.php&sfp_email=&sfph_mail=Refwww.wordfence.com/threat-intel/vulnerabilities/id/8ebfc52b-278c-49d5-9226-d28a59335d46?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-15281?

CVE-2026-15281 is a medium-severity vulnerability. It was published on August 5, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-15281?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-15281?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-15281?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-15281 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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