CVE-2026-14203 in Smart Manager Plugin
Summary
by MITRE • 07/27/2026
The Smart Manager WordPress plugin before 8.92.0 does not properly encode a post field before rendering it into an HTML attribute in its management grid, allowing users with the Contributor role or above to inject JavaScript that executes in the browser session of an administrator who views the grid.
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Analysis
by VulDB Data Team • 07/27/2026
The vulnerability resides within the Smart Manager WordPress plugin version 8.92.0 and earlier, where improper output encoding creates a cross-site scripting flaw in the management grid interface. This issue affects users with Contributor role or higher privileges, enabling them to inject malicious JavaScript code into post fields that are subsequently rendered into HTML attributes without adequate sanitization. The vulnerability stems from insufficient input validation and output encoding practices that fail to properly escape special characters before incorporating user-supplied data into HTML contexts.
The technical implementation flaw manifests when the plugin processes post data for display in its management grid, where user-contributed content containing script tags or malicious payloads gets directly embedded into HTML attributes without proper HTML entity encoding. This creates a persistent cross-site scripting vector that allows attackers to execute arbitrary JavaScript code within the browser sessions of administrators who view the affected grid interface. The vulnerability specifically targets the rendering process where post fields are converted into HTML attributes, making it particularly dangerous as it operates at the point of data presentation rather than data input.
The operational impact of this vulnerability is significant as it enables privilege escalation through a common attack vector that can be exploited by users with relatively low permissions. An attacker with Contributor access can craft malicious posts containing JavaScript payloads that execute in the browser context of administrators who subsequently view the management grid. This creates a potential for session hijacking, credential theft, or further exploitation of the administrative interface. The vulnerability persists as long as the affected plugin version is active and allows attackers to maintain persistent access through the execution of malicious scripts that can capture user interactions or redirect to malicious sites.
Mitigation strategies should focus on implementing proper output encoding and input validation practices throughout the plugin's data handling pipeline. The most effective immediate solution involves updating to Smart Manager version 8.92.0 or later, which contains the necessary fixes for HTML attribute encoding. Organizations should also implement additional security measures such as role-based access controls that limit the types of modifications contributors can make to post content, and consider implementing content security policies to prevent execution of unauthorized scripts. The vulnerability aligns with CWE-79 Cross-site Scripting and follows attack patterns described in ATT&CK technique T1566 Phishing, where users are tricked into executing malicious code through legitimate administrative interfaces.
Security professionals should also conduct thorough audits of other plugins that may exhibit similar output encoding vulnerabilities, particularly those handling user-generated content in HTML contexts. The remediation process should include comprehensive testing of all input/output handling within the plugin's management interface to ensure no similar vectors remain unaddressed. Organizations maintaining WordPress installations should establish regular update protocols and vulnerability scanning procedures to identify and remediate such issues before they can be exploited by threat actors, with particular attention to plugins that provide administrative interfaces or handle sensitive data processing operations.