CVE-2026-57653: WP Job Portal SQL Injection Vulnerability

CVE-2026-57653 Overview

CVE-2026-57653 is a SQL Injection vulnerability affecting the WP Job Portal plugin for WordPress in versions up to and including 2.5.2. The flaw allows authenticated users with Contributor-level privileges to inject arbitrary SQL statements into database queries. The issue is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command. Successful exploitation can expose sensitive data stored in the WordPress database and disrupt site availability. The vulnerability was published on 2026-06-26 through the Patchstack vulnerability database.

Critical Impact
Authenticated Contributor accounts can execute arbitrary SQL against the WordPress database, leading to confidentiality loss and partial availability impact across the affected site.

Affected Products

WP Job Portal WordPress plugin versions <= 2.5.2
WordPress sites permitting Contributor-role registration with WP Job Portal installed
Multisite WordPress deployments using the vulnerable plugin

Discovery Timeline

2026-06-26 - CVE-2026-57653 published to NVD
2026-06-26 - Last updated in NVD database

Technical Details for CVE-2026-57653

Vulnerability Analysis

The vulnerability resides in the WP Job Portal plugin, which provides job listing and recruitment functionality for WordPress. Input passed through plugin request handlers reaches SQL queries without adequate sanitization or parameterization. An attacker holding a Contributor account, the lowest privileged authenticated role capable of submitting content, can manipulate query parameters to alter the intended database operation.

Because the scope is marked as changed, the injected SQL can affect data outside the immediate vulnerable component, including tables managed by the WordPress core or other plugins sharing the database. The impact profile emphasizes confidentiality loss with limited availability disruption, consistent with data exfiltration through UNION-based or blind SQL injection techniques. The EPSS score is 0.211%, indicating a low near-term likelihood of exploitation compared to other public vulnerabilities.

Root Cause

The root cause is improper neutralization of user-supplied input in SQL statements executed by the plugin. Rather than using WordPress prepared statement APIs such as $wpdb->prepare() with placeholders, the vulnerable code paths concatenate request-derived values directly into query strings. This pattern allows an attacker to break out of the intended query context.

Attack Vector

The attack requires network access to the WordPress site and valid Contributor credentials. No user interaction is required beyond the attacker's own authenticated request. The attacker submits crafted parameters to plugin endpoints that interact with the database, embedding SQL syntax that the plugin appends to a legitimate query. The vulnerability manifests when the plugin executes the concatenated query against the WordPress database. Detailed technical analysis is available in the Patchstack advisory for WP Job Portal.

Detection Methods for CVE-2026-57653

Indicators of Compromise

Unexpected SQL syntax characters such as UNION, SELECT, --, or /* within HTTP request parameters targeting WP Job Portal endpoints
Anomalous read activity against wp_users, wp_usermeta, or wp_options tables originating from PHP worker processes handling plugin requests
New or modified Contributor accounts making repeated requests to plugin URLs shortly before database anomalies
Web server access logs showing long or URL-encoded parameter values sent to WP Job Portal action handlers

Detection Strategies

Deploy WordPress-aware web application firewall rules that inspect plugin request parameters for SQL metacharacters and known injection payload patterns
Enable MySQL general or slow query logging and alert on queries containing tautologies such as OR 1=1 or stacked statements from the WordPress database user
Correlate authentication events for Contributor-role users with subsequent bursts of plugin endpoint requests

Monitoring Recommendations

Monitor outbound traffic from the web server for unexpected data volumes that may indicate database exfiltration
Track plugin file integrity and administrator role assignments for unauthorized changes following suspicious activity
Review Contributor account creation patterns, particularly self-registration events from unfamiliar IP ranges

How to Mitigate CVE-2026-57653

Immediate Actions Required

Update the WP Job Portal plugin to a version later than 2.5.2 once the vendor releases a patched build
Audit and remove unnecessary Contributor accounts, and disable open user registration if not required
Rotate WordPress administrator credentials and database secrets if exploitation is suspected
Enforce least privilege on the WordPress database user, restricting access to only the tables the application requires

Patch Information

Refer to the Patchstack WP Job Portal vulnerability entry for the latest remediation guidance and fixed version information. Apply plugin updates through the WordPress administrative interface or WP-CLI as soon as a patched release is available.

Workarounds

Deactivate the WP Job Portal plugin until a fixed version is installed if the functionality is not business critical
Restrict access to plugin endpoints using web server access controls or a WAF virtual patch that blocks SQL injection payloads
Temporarily downgrade authenticated content submission features by removing Contributor privileges from non-trusted accounts

bash

# Configuration example: update WP Job Portal via WP-CLI once a patched version is available
wp plugin update wp-job-portal --version=<patched-version>
wp plugin list --name=wp-job-portal --fields=name,status,version