CVE-2026-27373: Tablesome WordPress Plugin SQLi Flaw

CVE-2026-27373 Overview

CVE-2026-27373 is a Blind SQL Injection vulnerability discovered in the Essekia Tablesome WordPress plugin. The vulnerability stems from improper neutralization of special elements used in SQL commands, allowing attackers to execute arbitrary SQL queries against the underlying database without proper authentication or authorization controls.

Blind SQL Injection is particularly dangerous because it allows attackers to extract sensitive database information through inference-based techniques, even when direct query results are not visible. This can lead to unauthorized data access, privilege escalation, and complete database compromise.

Critical Impact

Attackers can exploit this Blind SQL Injection vulnerability to extract sensitive data from WordPress databases, including user credentials, personally identifiable information, and potentially gain administrative access to affected WordPress installations.

Affected Products

• Tablesome WordPress Plugin version 1.2.3 and earlier
• WordPress installations using vulnerable Tablesome versions

Discovery Timeline

• 2026-03-05 - CVE-2026-27373 published to NVD
• 2026-03-05 - Last updated in NVD database

Technical Details for CVE-2026-27373

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) affects the Tablesome WordPress plugin, a tool used for creating and managing database tables within WordPress. The vulnerability allows Blind SQL Injection attacks, which means attackers can infer database contents through boolean-based or time-based techniques even when error messages are suppressed.

The vulnerability exists in versions through 1.2.3 of the Tablesome plugin. Unlike direct SQL Injection where attackers receive immediate feedback, Blind SQL Injection requires attackers to craft queries that produce observable differences in application behavior (such as response time delays or conditional content changes) to extract data one bit or character at a time.

Root Cause

The root cause of this vulnerability is the failure to properly sanitize and validate user-supplied input before incorporating it into SQL queries. The Tablesome plugin does not adequately implement parameterized queries or proper escaping mechanisms when handling user input, allowing malicious SQL syntax to be interpreted as executable database commands.

WordPress provides built-in functions like $wpdb->prepare() for safe database queries, but these protective measures were not properly implemented in the affected code paths of the Tablesome plugin.

Attack Vector

The attack vector for this vulnerability involves crafting specially formatted input that contains SQL syntax designed to manipulate database queries. In a Blind SQL Injection scenario, the attacker typically:

1. Identifies an input field or parameter that interacts with the database
2. Injects conditional SQL statements that cause measurable changes in application response
3. Uses boolean conditions or time delays to infer database structure and content
4. Systematically extracts sensitive data through repeated injection attempts

For detailed technical information about this vulnerability, refer to the Patchstack SQL Injection Vulnerability advisory.

Detection Methods for CVE-2026-27373

Indicators of Compromise

• Unusual database query patterns with conditional statements or time-delay functions
• Increased database load or slow response times indicating time-based SQL injection attempts
• Web server logs showing suspicious input patterns containing SQL syntax in request parameters
• Database logs revealing failed or unusual query executions

Detection Strategies

• Monitor web application firewall (WAF) logs for SQL injection signature matches
• Implement real-time database activity monitoring to detect anomalous query patterns
• Review WordPress plugin audit logs for unexpected database operations from the Tablesome plugin
• Deploy intrusion detection systems with SQL injection detection rules enabled

Monitoring Recommendations

• Enable detailed logging for WordPress database queries and plugin activities
• Configure alerting for database queries containing time-delay functions like SLEEP() or BENCHMARK()
• Monitor for unusual spikes in database query execution times
• Implement rate limiting on input fields that interact with the Tablesome plugin

How to Mitigate CVE-2026-27373

Immediate Actions Required

• Update the Tablesome plugin to the latest patched version immediately
• Review database audit logs for evidence of prior exploitation attempts
• Consider temporarily disabling the Tablesome plugin if an immediate update is not possible
• Implement web application firewall rules to block common SQL injection patterns

Patch Information

Security patches addressing this vulnerability should be obtained from the official WordPress plugin repository or the Essekia vendor. Update the Tablesome plugin to a version newer than 1.2.3 that contains the security fix. For additional details, consult the Patchstack advisory.

Workarounds

• Temporarily deactivate the Tablesome plugin until a patched version is available
• Implement a Web Application Firewall (WAF) with SQL injection protection rules
• Restrict access to WordPress admin areas to trusted IP addresses only
• Enable WordPress security plugins that provide input sanitization and SQL injection protection

# WordPress CLI command to deactivate Tablesome plugin as temporary workaround
wp plugin deactivate tablesome

# Verify plugin status
wp plugin list --status=inactive | grep tablesome