What is the CVSS score of EUVD-2026-49690?

EUVD-2026-49690 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.2%.

Chaty Pro EUVD-2026-49690

| CVE-2026-6251 MEDIUM

SQL Injection (CWE-89)

2026-07-28 Wordfence

GHSA-h976-4r88-23hx

SQLi PHP WordPress Chaty Pro

6.5

CVSS 3.1 · Vendor: Wordfence

Severity by source

Vendor (Wordfence) PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

vuln.today AI

6.5 MEDIUM

Requires subscriber-level authentication (PR:L); no user interaction; confidentiality impact only.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Jul 28, 2026 - 06:51 vuln.today

CVE Published

Jul 28, 2026 - 05:39 cve.org

MEDIUM 6.5

DescriptionCVE.org

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.

AnalysisAI

SQL injection in the Chaty Pro WordPress plugin (up to version 3.5.5) allows authenticated attackers with subscriber-level access to extract sensitive database contents, including user credentials and configuration data. The vulnerability exists in the fetch_custom_field() function, which directly concatenates the widget_id POST parameter into a raw SQL query without using $wpdb->prepare(). No public exploit or active exploitation has been identified at the time of analysis, and the risk is elevated by the low privilege requirement.

Technical ContextAI

Chaty Pro is a premium WordPress plugin that provides live chat and customer communication features, written in PHP. The vulnerability is a classic SQL injection (CWE-89) arising from the fetch_custom_field() function in admin/class-admin-base.php. The function retrieves the widget_id parameter using filter_input(INPUT_POST, ...) and concatenates it directly into a SQL query within a numeric context, bypassing WordPress's built-in parameterized query methods ($wpdb->prepare()) and type casting. The nonce verification is performed after the query executes, rendering it ineffective. The affected CPE string cpe:2.3:a:chaty:chaty_pro:*:*:*:*:*:*:*:* indicates any version of Chaty Pro is potentially vulnerable.

RemediationAI

The primary remediation is to upgrade Chaty Pro to the latest version that includes a fix for this SQL injection. While the provided references do not specify a patched version, the vendor (Premio) typically releases updates; check the plugin changelog at https://plugins.trac.wordpress.org/browser/chaty-pro/ or the Wordfence advisory for the fixed version number. As a workaround, restrict subscriber-level privileges by ensuring only trusted users have accounts, or deploy a web application firewall (WAF) rule that blocks suspicious SQL patterns in the widget_id POST parameter. Note that blocking widget_id entirely may break legitimate chat functionality.