CVE-2026-9714: Simple Divi Shortcode Plugin Stored XSS Vulnerability (WordPress)

Technical summary

CVE-2026-9714 is a Stored Cross-Site Scripting (XSS) vulnerability in the Simple Divi Shortcode plugin's showmodule_shortcode() function. The vulnerability arises from insufficient input sanitization and output escaping of the 'id' shortcode attribute. The plugin concatenates the 'id' parameter directly into a dynamically constructed shortcode string without applying esc_attr() or equivalent escaping functions, allowing attackers to break out of attribute context and inject arbitrary HTML and JavaScript. The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation). Exploitation requires contributor-level or higher privileges and creates a persistent payload that executes each time an authorized user views the affected page.

Business impact

For WordPress site operators, this vulnerability poses a content integrity and user trust risk. An attacker with contributor access—often granted to content creators, authors, or partner accounts—can silently inject malicious scripts that compromise visitor sessions, redirect users, harvest credentials, or deliver malware. The stored nature of the attack means the payload persists until manually removed, creating prolonged exposure. Sites relying on this plugin for shortcode functionality face potential visitor compromise and reputational damage if exploited. Smaller teams with looser access controls or managed hosting environments face higher practical risk.

Affected systems

This vulnerability affects WordPress installations running the Simple Divi Shortcode plugin in version 1.2 or earlier. Any WordPress site with this plugin active and users granted contributor-level access or higher is at risk. The vulnerability does not require an unauthenticated attacker—it requires someone with existing plugin permissions—making the risk profile dependent on how site administrators distribute contributor and above roles.

Exploitability

The vulnerability is moderately exploitable. It requires valid WordPress authentication at the contributor level or above, which limits the attack surface to trusted (or compromised) internal accounts. However, once those credentials are compromised or misused, exploitation is straightforward: the attacker simply adds or edits a post or page, embeds a malicious [showmodule] shortcode with injected JavaScript in the 'id' parameter, and the payload persists and executes for all subsequent visitors. The lack of complexity in the exploit itself, combined with the prevalence of contributor-level accounts, elevates practical risk despite the authentication requirement. The vulnerability is not currently listed in CISA's Known Exploited Vulnerabilities (KEV) catalog.

Remediation

Site administrators should update the Simple Divi Shortcode plugin immediately to a version later than 1.2 (verify against the vendor advisory for the patched release). For environments where immediate patching is not possible, consider disabling the plugin or restricting the [showmodule] shortcode to trusted administrators only. Review contributor-level and author-level account assignments on affected sites and revoke unnecessary permissions. Audit recent posts and pages using the [showmodule] shortcode for suspicious or unexpected 'id' parameter values and remove any malicious payloads before users encounter them.

Patch guidance

Check the Simple Divi Shortcode plugin repository or the vendor's advisory for version 1.3 or later (exact version numbers should be verified against official release notes). Update through the WordPress admin panel's plugin management interface or via command-line tools if available. After patching, verify that all shortcodes on your site render correctly, as the fix may affect shortcode behavior. If you are running multiple WordPress installations, prioritize patching those with higher contributor user counts or greater public traffic first.

Detection guidance

Review your WordPress plugin audit logs and post/page revision histories for changes to shortcodes, particularly the [showmodule] shortcode, made by contributor-level users. Look for 'id' parameter values containing HTML entities, script tags, or unusual characters that suggest injection attempts. Monitor for JavaScript console errors or unexpected network requests initiated from pages containing [showmodule] shortcodes. If you maintain logs of post modifications, cross-reference contributors who added or edited shortcodes with known user activity to identify suspicious patterns. WordPress security plugins may offer XSS detection rules; ensure those rules are enabled and reviewed for alerts.

Why prioritize this

This vulnerability merits prompt attention despite a MEDIUM CVSS score. The stored XSS nature means the attack persists indefinitely until remediated, creating cumulative exposure to all site visitors. While authentication is required, contributor-level access is commonly granted and frequently compromised or misused. The ease of exploitation once authenticated, combined with the absence of any CVSS availability impact, suggests the primary concern is confidentiality and integrity of user sessions rather than service disruption. Organizations with high-traffic or high-value WordPress properties should prioritize patching this plugin within their standard update cycles.

Risk score, explained

CVSS 3.1 score of 6.4 (MEDIUM) reflects a low attack vector threshold (network-accessible), low attack complexity, and low privilege requirement (authenticated). The scope is changed, indicating the vulnerability can impact resources beyond the plugin itself. Confidentiality and integrity impacts are rated low because the attacker can inject arbitrary scripts but the CVSS model does not escalate for stored XSS that affects multiple users. Availability is not impacted (no denial-of-service vector). The MEDIUM severity appropriately captures that this is a serious but non-critical threat requiring timely remediation rather than emergency response.

Frequently asked questions