CVE-2025-22783: Squirrly SEO Plugin SQLi Vulnerability

CVE-2025-22783 Overview

CVE-2025-22783 is a SQL Injection vulnerability in the SEO Plugin by Squirrly SEO for WordPress. The flaw stems from improper neutralization of special elements used in an SQL command [CWE-89]. It affects all plugin versions up to and including 12.4.03. An authenticated attacker with low privileges can inject crafted SQL statements through unsanitized input handled by the plugin. Successful exploitation compromises database confidentiality, integrity, and availability. The vulnerability is network-exploitable and requires no user interaction, making it attractive for opportunistic attackers targeting WordPress sites.

Critical Impact
Authenticated SQL Injection allowing attackers to read, modify, or destroy WordPress database contents, including credentials and session data.

Affected Products

Squirrly SEO Plugin by Squirrly SEO (squirrly-seo) for WordPress
All versions from initial release through 12.4.03
WordPress sites running the vulnerable plugin with at least one low-privilege authenticated user

Discovery Timeline

2025-03-27 - CVE-2025-22783 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-22783

Vulnerability Analysis

The vulnerability resides in the Squirrly SEO plugin's database query handling. User-supplied input reaches an SQL query without proper sanitization or parameterization. An attacker authenticated with low privileges can submit crafted parameters that alter query logic. The plugin fails to apply WordPress core safeguards such as $wpdb->prepare() or esc_sql() to attacker-controlled values. This allows arbitrary SQL clauses to execute within the WordPress database context. Refer to the Patchstack Vulnerability Report for additional disclosure detail.

Root Cause

The root cause is improper neutralization of special characters in SQL statements [CWE-89]. Input passed into one or more plugin database operations is concatenated into queries instead of bound as parameters. Sanitization and type-casting routines are either missing or applied inconsistently. This pattern allows quote escaping, UNION-based extraction, and conditional payloads.

Attack Vector

The attack vector is network-based over HTTP/HTTPS against a WordPress site running the vulnerable plugin. An attacker first authenticates with any low-privilege account, such as a Subscriber-level user. They then send crafted requests to plugin endpoints that pass attacker input into SQL queries. Successful injection can extract data from wp_users, retrieve password hashes, modify post or option data, and pivot toward administrative takeover. No public proof-of-concept or exploit entry is currently listed in ExploitDB or CISA KEV.

No verified exploit code is available. The vulnerability mechanism is described in prose only; see the Patchstack advisory linked above for technical specifics.

Detection Methods for CVE-2025-22783

Indicators of Compromise

HTTP requests to Squirrly SEO plugin endpoints containing SQL meta-characters such as ', ", --, UNION, SLEEP(, or INFORMATION_SCHEMA.
Unexpected outbound queries against wp_users, wp_usermeta, or wp_options from the WordPress database process.
New or modified administrator accounts in wp_users that do not correlate to legitimate admin activity.
Web server access logs showing repeated parameter probing from a single authenticated session.

Detection Strategies

Inspect WordPress access logs for plugin URL patterns containing encoded SQL syntax or boolean injection payloads.
Enable MySQL/MariaDB general query logging on test systems and search for queries lacking parameter binding originating from the Squirrly plugin.
Deploy a Web Application Firewall (WAF) rule set targeting SQL Injection signatures against the /wp-admin/ and /wp-content/plugins/squirrly-seo/ paths.
Compare installed plugin version against 12.4.03 across the fleet using a configuration management tool.

Monitoring Recommendations

Alert on creation of new WordPress users with administrator role outside of change windows.
Monitor for sudden spikes in database query latency or error rates tied to the plugin's request paths.
Forward WordPress, web server, and database logs to a centralized analytics platform for correlation and retention.

How to Mitigate CVE-2025-22783

Immediate Actions Required

Update the SEO Plugin by Squirrly SEO to a version newer than 12.4.03 as soon as the vendor publishes a fixed release.
Audit wp_users and wp_usermeta for unauthorized accounts or role changes since March 2025.
Rotate WordPress administrator passwords and invalidate active sessions if the plugin was exposed to untrusted users.
Restrict registration so that anonymous visitors cannot create low-privilege accounts that satisfy the authentication requirement.

Patch Information

Review the Patchstack Vulnerability Report for the current patched version. Apply the vendor-supplied update through the WordPress plugin manager or by deploying the updated plugin package across all affected sites. Verify the installed version after deployment.

Workarounds

Deactivate and remove the Squirrly SEO plugin until a patched release is installed.
Apply WAF rules that block SQL Injection patterns directed at the plugin's request endpoints.
Enforce least privilege by disabling self-registration and removing unused low-privilege accounts that could be abused as the authentication foothold.

bash

# Configuration example: identify and disable the vulnerable plugin via WP-CLI
wp plugin list --name=squirrly-seo --fields=name,status,version
wp plugin deactivate squirrly-seo
wp plugin update squirrly-seo