CVE-2026-9848: WP Ticket WordPress Plugin SQL Injection Vulnerability

Technical summary

CVE-2026-9848 is a SQL injection vulnerability in the WP Ticket WordPress plugin. The vulnerability exists in the `wp_ticket_com_posts_request()` function, which hooks into WordPress's `posts_request` filter. During unauthenticated front-end searches, the function calls `emd_author_search_results()`, which retrieves the search query from `$query->query_vars['s']`. Because WordPress's `WP_Query::parse_query()` has already stripped magic quotes protection via `wp_unslash()`, the search parameter is processed without further escaping or parameterization. The raw value is then directly concatenated into a LIKE clause within a UNION sub-SELECT appended to the main SQL query. The absence of `$wpdb->prepare()` or equivalent escaping allows attackers to inject arbitrary SQL syntax and retrieve database contents.

Business impact

A successful exploitation could expose sensitive information stored in the WordPress database, including user credentials, email addresses, posts not intended for public view, and potentially plugin configuration data. For WordPress sites running WP Ticket, this represents a confidentiality breach affecting customer trust, regulatory compliance (GDPR, CCPA, etc.), and potential reputational harm. The attack requires no authentication and can be performed remotely by anyone with network access to the affected site.

Affected systems

The WP Ticket plugin for WordPress versions up to and including 6.0.4 are affected. Any WordPress installation using this plugin within the vulnerable version range is at risk. The vulnerability is accessible via unauthenticated front-end search queries, meaning the attack surface is the public-facing website.

Exploitability

This vulnerability has a CVSS 3.1 score of 7.5 (HIGH). The attack vector is network-based, requires no privileges, and requires no user interaction. Exploitability is straightforward: an attacker crafts a malicious search query string containing SQL metacharacters or UNION-based injection payloads and submits it through the search functionality. The lack of input validation and output parameterization makes reliable exploitation feasible. However, the vulnerability is not currently listed on CISA's Known Exploited Vulnerabilities (KEV) catalog as of the last update.

Remediation

Site administrators should update the WP Ticket plugin to a patched version released after 6.0.4. Verify the availability and version number in the official WordPress plugin repository or vendor advisory before deploying. Until patching is possible, consider temporarily disabling the search functionality or restricting access to the search endpoint via web application firewall rules if operationally feasible. Additionally, review database access logs and security audit trails for evidence of exploitation.

Patch guidance

Check the official WP Ticket plugin page in the WordPress plugin directory for an available security update. Apply the latest version that addresses CVE-2026-9848. Verify patch deployment by confirming the plugin version in wp-admin and testing that the search functionality operates without regression. If an immediate patch is unavailable from the vendor, consult their security advisory for interim mitigations or consider temporary disablement of the plugin's search feature.

Detection guidance

Monitor web server access logs for suspicious search query parameters containing SQL syntax (e.g., UNION, SELECT, LIKE, OR, --) in the `s` parameter. Implement Web Application Firewall (WAF) rules to block requests containing common SQL injection payloads in search fields. Enable WordPress security logging and database query auditing to detect unusual query patterns. Review database logs for unexpected SELECT operations or access to sensitive tables. Threat hunting should focus on search requests from non-standard user agents or originating from external IP ranges.

Why prioritize this

This vulnerability merits immediate prioritization due to its HIGH CVSS score (7.5), unauthenticated attack vector, and direct impact on data confidentiality. The ease of exploitation combined with the sensitive nature of WordPress databases (user accounts, content, configurations) makes this a critical business risk. The lack of KEV status does not reduce urgency; it reflects only that exploits have not yet been weaponized at scale or reported in active campaigns.

Risk score, explained

The CVSS 3.1 score of 7.5 reflects a high-severity network-accessible vulnerability with no authentication or user interaction required. The attack complexity is low, meaning reliable exploitation is feasible. The confidentiality impact is rated HIGH because database queries can leak sensitive user and site data. Integrity and availability impacts are rated NONE because the vulnerability is read-only (SELECT-based injection). The overall score appropriately prioritizes this as a significant information disclosure risk.

Frequently asked questions