CVE-2026-42713: Post Title Marquee Scroll SQL Injection

CVE-2026-42713 Overview

CVE-2026-42713 is a blind SQL injection vulnerability in the Gopiplus Post title marquee scroll WordPress plugin. The flaw affects all plugin versions up to and including 9.9. It stems from improper neutralization of special elements used in SQL commands, classified under [CWE-89]. An authenticated attacker with high privileges can inject arbitrary SQL into database queries over the network. Successful exploitation enables data extraction through blind SQL inference and can impact resources outside the plugin's security scope.

Critical Impact

Authenticated attackers can execute arbitrary SQL queries against the WordPress database, exposing site data and affecting components beyond the vulnerable plugin.

Affected Products

• Gopiplus Post title marquee scroll WordPress plugin
• All versions from n/a through 9.9
• WordPress sites running the post-title-marquee-scroll plugin

Discovery Timeline

• 2026-10-07 - CVE-2026-42713 published to NVD
• 2026-10-07 - Last updated in NVD database

Technical Details for CVE-2026-42713

Vulnerability Analysis

The Post title marquee scroll plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows an attacker to break out of the intended query context and append arbitrary SQL syntax. Because the vulnerability is blind, attackers infer query results through boolean conditions or time-based payloads rather than direct output. The scope change in the vulnerability metrics indicates the impact extends beyond the plugin's own security boundary to other database objects.

Root Cause

The root cause is improper neutralization of special characters passed to SQL statements, matching [CWE-89]. The plugin concatenates attacker-controlled values into queries without using prepared statements or escaping functions such as $wpdb->prepare(). This design flaw permits SQL metacharacters to alter query logic directly.

Attack Vector

Exploitation requires network access to the WordPress site and high-privilege authentication. An attacker submits crafted parameters to a vulnerable plugin endpoint. The injected payload modifies the backend SQL query, enabling data inference across the WordPress database. No user interaction is required beyond the attacker's authenticated session.

For technical details, see the Patchstack Vulnerability Report.

Detection Methods for CVE-2026-42713

Indicators of Compromise

• Unexpected SQL syntax such as UNION, SLEEP(, BENCHMARK(, or OR 1=1 in HTTP request parameters targeting the post-title-marquee-scroll plugin endpoints.
• Abnormal query latency or repeated requests to plugin admin pages from a single authenticated session.
• Database error entries in debug.log referencing malformed queries originating from plugin files.

Detection Strategies

• Review WordPress access logs for POST or GET requests to wp-admin pages tied to the plugin containing SQL metacharacters.
• Deploy a web application firewall ruleset covering OWASP CRS SQL injection signatures for authenticated admin requests.
• Correlate authenticated administrator sessions with database query anomalies in SIEM telemetry.

Monitoring Recommendations

• Enable MySQL general query logging on affected hosts during triage to capture full statements executed by the plugin.
• Alert on wp_users or wp_options table reads originating from plugin request contexts.
• Monitor privileged account activity for unusual plugin page access patterns.

How to Mitigate CVE-2026-42713

Immediate Actions Required

• Deactivate the Post title marquee scroll plugin until a patched release is available from the vendor.
• Restrict administrator and editor access to trusted accounts and enforce multi-factor authentication for all WordPress privileged users.
• Audit recent administrator activity for signs of SQL injection attempts or unauthorized data access.

Patch Information

No fixed version has been published at the time of CVE disclosure. Affected installations include all releases up to 9.9. Monitor the Patchstack Vulnerability Report and the plugin's WordPress.org page for an updated release.

Workarounds

• Remove the plugin entirely if marquee functionality is non-essential to site operations.
• Deploy a web application firewall with virtual patching rules that block SQL injection payloads sent to plugin endpoints.
• Apply least-privilege principles to WordPress database accounts, limiting the database user to only the permissions WordPress strictly requires.

# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate post-title-marquee-scroll
wp plugin delete post-title-marquee-scroll