CVE-2026-81432 in JetStyleManager Plugin
Summary
by MITRE • 09/02/2026
The JetStyleManager for Gutenberg WordPress plugin before 1.3.9 does not have CSRF protection on some of its AJAX actions, allowing attackers to make a logged-in user with the edit_posts capability (Contributor and above) delete or modify custom widget skins via a crafted request, provided they can trick the user into performing an action such as clicking a link.
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Analysis
by VulDB Data Team • 09/02/2026
The JetStyleManager for Gutenberg WordPress plugin version 1.3.8 and earlier suffers from a critical Cross-Site Request Forgery vulnerability affecting its AJAX endpoints. This security flaw stems from the absence of anti-CSRF tokens or nonce verification mechanisms within specific administrative actions, particularly those responsible for managing custom widget skins. In modern web application architecture, CSRF protection is essential to ensure that state-changing requests are initiated by legitimate users acting with intent rather than through malicious scripts executed on third-party sites. The lack of these safeguards means the server cannot distinguish between a request generated by an authenticated user via their browser and one forged by an attacker leveraging the victim's active session cookies.
The technical nature of this vulnerability allows remote attackers to execute unauthorized actions against the WordPress installation without requiring authentication credentials, provided they can trick a privileged user into interacting with a malicious link or page. Specifically, because the affected AJAX endpoints do not validate the origin or authenticity of the request beyond standard cookie-based session identification, an attacker can craft a simple HTML form or image tag that submits a DELETE or PUT request to the vulnerable endpoint when loaded in the victim's browser. This exploitation vector relies on the principle that browsers automatically include cookies associated with the target domain in every request made to that domain, thereby satisfying any basic authentication checks while bypassing intent verification.
The operational impact of this vulnerability is significant for website administrators and content creators who possess at least contributor-level permissions or higher within WordPress. The primary consequence involves the unauthorized deletion or modification of custom widget skins configured through JetStyleManager. Since these skins define the visual presentation and styling elements of various site components, an attacker can corrupt the aesthetic integrity of the website, potentially causing layout breaks that degrade user experience. Furthermore, in more complex scenarios involving chained vulnerabilities, such modifications could serve as a foothold for further exploitation or defacement attacks, undermining the trustworthiness of the content management system.
This flaw aligns with CWE-352, which classifies Cross-Site Request Forgery (CSRF) as a weakness where an application fails to verify that a state-changing request was intentionally made by the user. From a threat intelligence perspective, this behavior corresponds to ATT&CK technique T1078, specifically relating to valid accounts and potential misuse of legitimate credentials through social engineering or automated scripts. The vulnerability highlights a common oversight in plugin development where convenience is prioritized over security during AJAX implementation phases.
To mitigate this risk, immediate action should be taken by updating the JetStyleManager for Gutenberg WordPress plugin to version 1.3.9 or later, which includes patches addressing these CSRF deficiencies. Administrators who cannot update immediately should consider implementing additional server-side controls such as strict origin header validation and ensuring that sensitive administrative actions require re-authentication via multi-factor authentication if available. Regular security audits of third-party plugins are also recommended to identify similar gaps in request verification logic before they can be exploited by malicious actors targeting WordPress ecosystems.