CVE-2026-93513 in SiteSkite Plugin
Summary
by MITRE • 09/23/2026
Contributor Insecure Direct Object References (IDOR) in SiteSkite <= 2.1.7 versions.
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Analysis
by VulDB Data Team • 09/23/2026
The vulnerability identified as an insecure direct object reference within the SiteSkite plugin, affecting versions up to and including 2.1.7, represents a critical failure in access control mechanisms that allows unauthorized users to manipulate or retrieve data associated with other users. This class of flaw is formally categorized under CWE-639, which describes situations where an application exposes a reference to an internal implementation object, such as a file, directory, or database key, without performing sufficient authorization checks on the user's request. In the context of SiteSkite, this typically manifests when the plugin processes requests containing identifiers for contributors or their associated content, failing to verify that the authenticated user has legitimate permission to access or modify the specific resource identified by those parameters.
From a technical perspective, the exploitation vector relies on the predictable nature of object identifiers often used in web applications, such as sequential integers or easily guessable strings. An attacker can intercept HTTP requests directed at SiteSkite endpoints and systematically alter these identifier values. Because the underlying code does not adequately validate whether the requesting user owns the resource or possesses administrative privileges for it, the application processes the request based solely on the validity of the object reference itself rather than its association with the current session. This lack of server-side authorization logic enables a low-privilege attacker to escalate their effective permissions by accessing sensitive contributor profiles, editing content they do not own, or potentially extracting private data stored within those objects.
The operational impact of this vulnerability is significant for any WordPress site utilizing SiteSkite, particularly those with multi-author environments where multiple contributors manage distinct pieces of content. Successful exploitation can lead to unauthorized modifications of published articles, deletion of critical media assets, or exposure of personally identifiable information belonging to other users and administrators. Beyond the immediate data integrity risks, this flaw undermines the trust model of collaborative platforms by allowing malicious actors to disrupt workflows, deface websites through unauthorized edits, or use compromised contributor accounts as a foothold for further attacks against the broader WordPress installation. The severity is compounded if the affected endpoints also handle sensitive administrative functions without additional safeguards.
To mitigate this risk, site administrators must immediately update SiteSkite to version 2.1.8 or any later release where these access control checks have been implemented and verified by the developers. Until an upgrade is possible, implementing a Web Application Firewall with rulesets tuned for IDOR patterns can provide partial protection by detecting anomalous requests that attempt to iterate through object IDs outside of expected ranges. Furthermore, security audits should focus on reviewing custom code or other plugins that might interact with SiteSkite data structures to ensure no secondary vectors exist. Long-term remediation involves adopting strict authorization practices where every request is validated against the user's role and ownership claims before any database operations are executed, aligning with OWASP guidelines for secure coding in web applications.