CVE-2026-48886: JS Help Desk SQLi Vulnerability

CVE-2026-48886 Overview

CVE-2026-48886 is an unauthenticated SQL injection vulnerability affecting the JS Help Desk WordPress plugin in versions up to and including 3.0.9. The flaw is classified under [CWE-89], improper neutralization of special elements used in an SQL command. Remote attackers can inject crafted SQL statements through the plugin without prior authentication. Exploitation can expose sensitive support ticket data and disrupt the availability of the underlying database. The vulnerability is tracked with an EPSS probability of approximately 0.283%.

Critical Impact
Unauthenticated attackers can issue arbitrary SQL queries against the WordPress database used by JS Help Desk, exposing confidential support data and impacting service availability.

Affected Products

JS Help Desk WordPress plugin versions ≤ 3.0.9
WordPress sites using the js-support-ticket plugin
Help desk and ticketing deployments backed by the affected plugin

Discovery Timeline

2026-06-15 - CVE-2026-48886 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2026-48886

Vulnerability Analysis

The vulnerability resides in the JS Help Desk plugin (js-support-ticket) for WordPress, where user-controlled input reaches an SQL query without proper sanitization or parameterization. Because the affected endpoint does not require authentication, any remote attacker capable of reaching the WordPress site can submit malicious input. The injection occurs in a query path executed against the WordPress database that stores ticket records and related metadata.

The scope is marked as changed, meaning a successful injection can affect data outside the vulnerable component itself, including other WordPress tables managed by the same database user. Confidentiality impact is rated high because attackers can read arbitrary table contents, including credential hashes and session tokens. Availability impact is rated low, reflecting the potential for query-driven resource consumption or selective data deletion.

Root Cause

The root cause is the construction of SQL statements through direct string concatenation of attacker-controlled parameters. The plugin does not apply wpdb::prepare() or equivalent parameter binding before executing the query, allowing injected SQL syntax to alter the original statement.

Attack Vector

The attack vector is network based and requires no privileges or user interaction. An attacker sends a crafted HTTP request to a vulnerable plugin endpoint, embedding SQL metacharacters and payloads in a vulnerable parameter. The injected payload executes within the context of the WordPress database user, returning data through the application response or via blind techniques such as time-based or boolean-based inference. Refer to the Patchstack advisory for additional technical context.

Detection Methods for CVE-2026-48886

Indicators of Compromise

HTTP requests to js-support-ticket plugin endpoints containing SQL syntax such as UNION SELECT, SLEEP(, BENCHMARK(, OR 1=1, or commented payloads using -- and #
Unusual outbound responses from the WordPress server containing database error strings or unexpected row dumps
Spikes in long-running database queries originating from the WordPress wp-content/plugins/js-support-ticket/ code path
New or modified WordPress administrator accounts following anomalous plugin activity

Detection Strategies

Inspect web server access logs for requests targeting JS Help Desk action handlers with encoded SQL metacharacters in query strings or POST bodies
Deploy WordPress-aware Web Application Firewall (WAF) rules that flag SQL injection patterns against js-support-ticket URLs
Enable MySQL or MariaDB general query logging temporarily to identify malformed statements correlated with plugin requests

Monitoring Recommendations

Alert on repeated 500-series HTTP responses from JS Help Desk endpoints that may indicate failed injection attempts
Monitor for sudden growth in result-set sizes or unusual INFORMATION_SCHEMA queries against the WordPress database
Track plugin file integrity to detect tampering or webshell drops following successful exploitation

How to Mitigate CVE-2026-48886

Immediate Actions Required

Update JS Help Desk to a version newer than 3.0.9 as soon as a fixed release is published by the vendor
Restrict access to WordPress sites running the vulnerable plugin using IP allowlists or authentication proxies until patched
Rotate WordPress database credentials, administrator passwords, and API keys if exploitation is suspected
Audit the wp_users, wp_options, and JS Help Desk ticket tables for unauthorized changes

Patch Information

No patch metadata is available in the NVD record at the time of writing. Site administrators should consult the Patchstack advisory and the WordPress plugin repository for the latest fixed version. Apply the vendor update through the WordPress admin console or by replacing plugin files manually.

Workarounds

Disable and remove the js-support-ticket plugin until a fixed release is installed
Deploy a virtual patch via a WAF that blocks SQL metacharacters on JS Help Desk request parameters
Apply least-privilege principles to the WordPress database account, limiting it to the schemas and operations required by the site

bash

# Configuration example: temporarily disable the vulnerable plugin via WP-CLI
wp plugin deactivate js-support-ticket
wp plugin delete js-support-ticket