CVE-2026-32555: Boost SQL Injection Vulnerability

CVE-2026-32555 Overview

CVE-2026-32555 is an unauthenticated SQL injection vulnerability affecting the Boost WordPress plugin in versions 2.0.4 and earlier. The flaw is classified under [CWE-89], Improper Neutralization of Special Elements used in an SQL Command. Remote attackers can inject arbitrary SQL statements without authentication or user interaction. The vulnerability carries a CVSS 3.1 score of 9.3 with scope change, indicating impact beyond the vulnerable component. See the Patchstack WordPress Vulnerability Report for the vendor advisory.

Critical Impact
Unauthenticated attackers can inject SQL statements over the network to read sensitive database content and degrade site availability.

Affected Products

Boost WordPress plugin versions <= 2.0.4
WordPress sites with the affected plugin installed and activated
Any hosting environment exposing the vulnerable plugin endpoints to the public internet

Discovery Timeline

2026-08-24 - CVE-2026-32555 published to NVD
2026-08-26 - Last updated in NVD database

Technical Details for CVE-2026-32555

Vulnerability Analysis

The vulnerability is an unauthenticated SQL injection in the Boost WordPress plugin. Attacker-controlled input reaches an SQL query without proper sanitization or parameterization. The flaw is reachable over the network with no authentication and no user interaction, which is why the CVSS scope is marked as changed. Successful exploitation exposes data stored in the WordPress database, including user records, session tokens, and plugin configuration. The vector permits high confidentiality impact and low availability impact but does not grant direct integrity modification per the published vector.

Root Cause

The root cause is improper neutralization of special elements used in SQL commands [CWE-89]. The plugin concatenates or otherwise embeds untrusted request parameters into SQL statements executed against the WordPress database. Parameterized queries and input validation are absent on the affected code path. Refer to the Patchstack advisory for the identified sink.

Attack Vector

An attacker sends a crafted HTTP request to a vulnerable plugin endpoint on the target WordPress site. The malicious payload manipulates the underlying SQL query to return arbitrary rows, extract database schema, or trigger time-based inference. No credentials, session, or user interaction are required. Because the WordPress database typically stores authentication material, successful extraction can enable follow-on account takeover.

No verified exploit code is publicly available. See the Patchstack advisory for the affected parameter and sink details.

Detection Methods for CVE-2026-32555

Indicators of Compromise

HTTP requests to Boost plugin endpoints containing SQL metacharacters such as ', --, UNION SELECT, SLEEP(, or BENCHMARK(
Unusually long or slow responses from /wp-admin/admin-ajax.php or plugin-specific routes, indicating time-based blind SQL injection
Web server logs showing repeated parameterized requests to Boost plugin URLs from a single source address
Unexpected reads against wp_users, wp_usermeta, or wp_options tables in database query logs

Detection Strategies

Deploy Web Application Firewall (WAF) rules that identify SQL injection payload signatures on requests targeting /wp-content/plugins/boost/ paths
Enable WordPress database query logging and alert on UNION, SELECT ... FROM information_schema, and stacked query patterns
Correlate HTTP 500 responses and elevated query latency with source IP to surface blind injection attempts

Monitoring Recommendations

Monitor plugin version inventory across WordPress deployments and flag any Boost installation at version <= 2.0.4
Ingest web server and PHP error logs into a centralized platform and alert on SQL syntax errors returned to clients
Track outbound egress from WordPress hosts for signs of data staging following suspected injection activity

How to Mitigate CVE-2026-32555

Immediate Actions Required

Update the Boost WordPress plugin to a version later than 2.0.4 as soon as a fixed release is available from the vendor
If no patched version exists, deactivate and remove the Boost plugin from all WordPress installations
Rotate WordPress administrator passwords, API keys, and secrets stored in wp_options if exploitation is suspected
Review database access logs for anomalous SELECT activity dating back to plugin installation

Patch Information

Consult the Patchstack WordPress Vulnerability Report for the current patch status and fixed version information. No fixed version is enumerated in the NVD entry at time of publication.

Workarounds

Restrict access to Boost plugin endpoints using WAF rules or .htaccess allowlists until a patched version is deployed
Enforce least-privilege database credentials for the WordPress application user to limit the blast radius of injection
Place the affected WordPress site behind a reverse proxy that inspects and blocks SQL injection payloads

bash

# Configuration example: remove the vulnerable plugin via WP-CLI
wp plugin deactivate boost
wp plugin delete boost