CVE-2026-109698: Mang Board WP SQL Injection Vulnerability

CVE-2026-109698 Overview

CVE-2026-109698 is a SQL Injection vulnerability in the Kitae Park Mang Board WP (mangboard) WordPress plugin. The flaw stems from improper neutralization of special elements used in SQL commands [CWE-89]. All versions of Mang Board WP up to and including 2.4.4 are affected. An unauthenticated remote attacker can send crafted input to inject SQL statements into backend database queries. Successful exploitation can expose sensitive data stored in the WordPress database and disrupt plugin availability. The issue is tracked by Patchstack and carries network-based exploitability with no privileges or user interaction required.

Critical Impact
Unauthenticated attackers can inject SQL commands against the WordPress database used by Mang Board WP, exposing confidential records and affecting service availability.

Affected Products

Kitae Park Mang Board WP (mangboard) plugin for WordPress
All versions from n/a through 2.4.4
WordPress sites with the vulnerable plugin installed and enabled

Discovery Timeline

2026-10-15 - CVE-2026-109698 published to NVD
2026-10-15 - Last updated in NVD database

Technical Details for CVE-2026-109698

Vulnerability Analysis

The Mang Board WP plugin fails to sanitize user-supplied input before passing it into SQL queries. Attackers submit crafted parameters to plugin endpoints that are concatenated into database statements. The injected payload alters query logic, allowing data extraction and manipulation of query results. Because the attack vector is network-based and requires no authentication, the vulnerability can be reached directly against public WordPress sites. The scope is marked as changed, indicating the impact extends beyond the vulnerable component into the broader WordPress database context. Confidentiality impact is high, while availability is low and integrity is not affected.

Root Cause

The root cause is improper neutralization of special elements in SQL commands [CWE-89]. The plugin does not use parameterized queries or the WordPress $wpdb->prepare() API consistently when handling user input. Request parameters flow directly into dynamically constructed SQL strings. This design allows attacker-controlled characters such as single quotes, comments, and UNION keywords to break out of the intended query structure.

Attack Vector

An unauthenticated remote attacker sends HTTP requests to plugin endpoints exposed by Mang Board WP. The attacker injects SQL syntax into vulnerable request parameters. The database engine executes the modified query, returning data the attacker chose to extract. Blind, union-based, and error-based SQL injection techniques are all plausible depending on the specific vulnerable sink. Refer to the Patchstack SQL Injection Advisory for additional technical context.

Detection Methods for CVE-2026-109698

Indicators of Compromise

HTTP requests to Mang Board WP endpoints containing SQL metacharacters such as ', --, /*, UNION SELECT, or SLEEP(
Unexpected database errors referencing the plugin's tables in web server or PHP logs
Anomalous outbound data volumes from the WordPress host following requests to mangboard URLs
New or modified WordPress administrator accounts shortly after suspicious plugin requests

Detection Strategies

Enable WordPress query logging and alert on queries containing concatenated user input against plugin tables
Deploy a Web Application Firewall (WAF) with signatures for common SQL injection payloads targeting WordPress plugins
Correlate HTTP access logs with database audit logs to identify request-to-query injection chains

Monitoring Recommendations

Monitor requests to all mangboard plugin endpoints for parameters containing SQL keywords and metacharacters
Alert on repeated 500-series responses from plugin URLs that may indicate injection probing
Track outbound network connections from the web server for signs of data exfiltration

How to Mitigate CVE-2026-109698

Immediate Actions Required

Identify all WordPress installations running the Mang Board WP plugin at version 2.4.4 or earlier
Disable the plugin if a patched release is not yet available for your environment
Restrict access to the WordPress site from untrusted networks until mitigations are applied
Review database and web server logs for prior exploitation attempts matching the indicators above

Patch Information

No fixed version is listed in the current NVD entry at the time of publication. Monitor the Patchstack SQL Injection Advisory and the plugin's WordPress.org page for a vendor release addressing CVE-2026-109698. Apply the update as soon as it becomes available.

Workarounds

Deploy virtual patching via a WAF rule blocking SQL injection payloads to mangboard request parameters
Remove or deactivate the Mang Board WP plugin until an official patch is released
Enforce least-privilege on the WordPress database account to limit the blast radius of successful injection

bash

# Example WAF rule concept (ModSecurity-style) to block SQLi payloads to mangboard endpoints
SecRule REQUEST_URI "@contains /mangboard" \
  "id:1026109698,phase:2,deny,status:403,msg:'Block SQLi attempt on Mang Board WP',\
   chain"
  SecRule ARGS "@rx (?i)(union(\s)+select|sleep\(|benchmark\(|--|\bor\b\s+1=1)" \
    "t:none,t:urlDecodeUni"