CVE-2026-15281 User Access Manager <= 2.3.12 - Authenticated (Subscriber+) SQL Injection
Authenticated attackers can exploit a second-order SQL injection in the User Access Manager plugin to extract sensitive database information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15281?
CVE-2026-15281 is a medium-severity SQL injection vulnerability in gm_alex User Access Manager, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-89
Which versions are affected by CVE-2026-15281?
How do I fix CVE-2026-15281?
No fix has been published for CVE-2026-15281 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-15281 being exploited?
There is no known exploitation of CVE-2026-15281 in the wild and no public exploit code.
Sources
Also known as GHSA-9pfh-vh53-g498.