CVE-2026-6251 Chaty Pro <= 3.5.5 - Authenticated (Subscriber+) SQL Injection via 'widget_id' Parameter
Authenticated attackers can inject SQL to extract sensitive database contents from the Chaty Pro WordPress plugin.
- 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-2026-6251?
CVE-2026-6251 is a medium-severity SQL injection vulnerability in Chaty Pro, published on 28 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Chaty Pro plugin for WordPress is vulnerable to Authenticated Time-Based Blind SQL Injection in versions up to and including 3.5.5. This is due to the fetch_custom_field() function in admin/class-admin-base.php retrieving the widget_id POST parameter via filter_input(INPUT_POST, ...) and directly concatenating the value into a raw SQL query in a numeric context without using $wpdb->prepare() or any integer casting. Additionally, the nonce verification check is performed after the SQL query has already executed, providing no protection against the injection. This makes it possible for authenticated attackers with subscriber-level access and above to inject arbitrary SQL commands, potentially leading to unauthorized extraction of sensitive database contents including user credentials and configuration data.
Weakness: CWE-89
Which versions are affected by CVE-2026-6251?
How do I fix CVE-2026-6251?
No fix has been published for CVE-2026-6251 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-2026-6251 being exploited?
There is no known exploitation of CVE-2026-6251 in the wild and no public exploit code.
Sources
Also known as GHSA-h976-4r88-23hx.