CVE-2026-94117 Overview
CVE-2026-94117 is a blind SQL injection vulnerability in the DevItems HashBar – WordPress Notification Bar plugin. The flaw affects all versions from the initial release through 2.0.3. It results from improper neutralization of special elements in SQL commands, classified under [CWE-89]. An authenticated attacker with high privileges can inject SQL statements over the network without user interaction. Successful exploitation exposes database contents and can impact site availability. The scope is marked as changed, meaning the impact extends beyond the vulnerable component.
Critical Impact
An authenticated attacker with high privileges can extract sensitive database contents through blind SQL injection, exposing WordPress user credentials, session tokens, and site configuration data.
Affected Products
- DevItems HashBar – WordPress Notification Bar plugin versions up to and including 2.0.3
- WordPress installations running the vulnerable plugin
- Sites where administrators have installed HashBar for notification banner functionality
Discovery Timeline
- 2026-09-22 - CVE-2026-94117 published to the National Vulnerability Database
- 2026-09-22 - Last updated in NVD database
Technical Details for CVE-2026-94117
Vulnerability Analysis
The HashBar plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries. The vulnerability is blind, meaning the application does not return query results directly in HTTP responses. Attackers must infer database contents through boolean-based or time-based inference techniques. The flaw requires an authenticated session with high privileges, limiting exposure primarily to compromised administrator or editor accounts. Once exploited, the scope-changed classification indicates the attacker can access data outside the plugin's normal security boundary. This can include WordPress core tables containing user credentials, authentication metadata, and site secrets.
Root Cause
The root cause is missing parameterization or inadequate escaping of input passed into database queries within the plugin. Rather than using prepared statements or the WordPress $wpdb->prepare() API, the vulnerable code concatenates untrusted input directly into SQL strings. Refer to the Patchstack SQL Injection Advisory for technical specifics on the affected code paths.
Attack Vector
Attackers exploit the vulnerability remotely through authenticated HTTP requests to the plugin's administrative endpoints. Because privileges required are high, the attack path typically involves either credential compromise, session hijacking, or malicious insider activity. Once access is achieved, the attacker crafts SQL payloads containing conditional logic or time-delay functions such as SLEEP() or BENCHMARK() to infer data one bit at a time.
See the Patchstack advisory for technical details on the vulnerable parameter
and exploitation methodology. No verified public exploit code is available.
Detection Methods for CVE-2026-94117
Indicators of Compromise
- HTTP requests to HashBar plugin endpoints containing SQL keywords such as UNION, SELECT, SLEEP, or BENCHMARK in parameters
- Unusually slow response times from WordPress admin pages associated with the plugin, suggestive of time-based blind SQL injection
- Elevated volumes of authenticated requests from a single administrator session targeting plugin endpoints
- Unexpected database read patterns in WordPress query logs originating from the plugin
Detection Strategies
- Enable WordPress query logging and inspect statements originating from the hashbar plugin path for concatenated input
- Deploy a web application firewall with signatures for common blind SQL injection payloads targeting WordPress plugins
- Correlate authentication events with subsequent administrative activity to identify anomalous privileged sessions
- Review MySQL general query logs for suspicious SLEEP(), BENCHMARK(), or conditional CASE WHEN constructs
Monitoring Recommendations
- Monitor administrator and editor account logins for unusual source addresses or off-hours access
- Alert on repeated 4xx or 5xx responses from HashBar endpoints, which may indicate payload probing
- Track outbound database connections and query duration statistics to detect time-based inference attacks
- Audit installed WordPress plugins on a scheduled basis to identify unpatched versions in the environment
How to Mitigate CVE-2026-94117
Immediate Actions Required
- Identify all WordPress sites running HashBar – WordPress Notification Bar version 2.0.3 or earlier
- Update the plugin to a patched release once the vendor publishes a fix, per the Patchstack advisory
- Rotate WordPress administrator and database credentials on affected sites
- Review recent administrator activity logs for signs of exploitation
Patch Information
At the time of publication, no fixed version is listed in the enriched CVE data. Monitor the Patchstack advisory and the plugin's WordPress.org page for an official patched release. Apply updates through the WordPress plugin manager as soon as they become available.
Workarounds
- Deactivate and remove the HashBar plugin until a patched version is available
- Restrict administrator and editor accounts to trusted personnel and enforce multi-factor authentication
- Deploy a web application firewall with WordPress-specific SQL injection rules in front of vulnerable sites
- Apply least-privilege principles to the WordPress database user, limiting the account to the minimum required schema access
# Disable the vulnerable plugin via WP-CLI until a patch is released
wp plugin deactivate hashbar-wp-notification-bar
wp plugin delete hashbar-wp-notification-bar
# Rotate WordPress salts after suspected exposure
wp config shuffle-salts
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
