CVE-2026-3523 Apocalypse Meow <= 22.1.0 - Authenticated (Administrator+) SQL Injection via 'type' Parameter
Authenticated administrators can exploit a logic flaw to inject SQL and extract sensitive database information from the Apocalypse Meow WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3523?
CVE-2026-3523 is a medium-severity SQL injection vulnerability in blobfolio Apocalypse Meow, published on 5 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Apocalypse Meow plugin for WordPress is vulnerable to SQL Injection via the 'type' parameter in all versions up to, and including, 22.1.0. This is due to a flawed logical operator in the type validation check on line 261 of ajax.php — the condition uses `&&` (AND) instead of `||` (OR), causing the `in_array()` validation to be short-circuited and never evaluated for any non-empty type value. Combined with `stripslashes_deep()` being called on line 101 which removes `wp_magic_quotes()` protection, attacker-controlled single quotes pass through unescaped into the SQL query on line 298. This makes it possible for authenticated attackers, with Administrator-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-2026-3523?
How do I fix CVE-2026-3523?
No fix has been published for CVE-2026-3523 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-2026-3523 being exploited?
There is no known exploitation of CVE-2026-3523 in the wild and no public exploit code.
Sources
Also known as GHSA-3887-vhg9-78qg.