CVE-2026-39752 in Jobs for WordPress Plugin
Summary
by MITRE • 10/06/2026
Contributor Arbitrary File Deletion in Jobs for WordPress <= 2.8.2 versions.
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Analysis
by VulDB Data Team • 10/06/2026
The vulnerability identified as Contributor Arbitrary File Deletion within the Jobs plugin for WordPress, affecting versions up to and including 2.8.2, represents a critical security flaw rooted in insufficient access control mechanisms. This issue allows authenticated users with lower-level privileges, specifically those assigned the contributor role, to execute unauthorized file system operations on the underlying server hosting the WordPress installation. In typical web application architectures, particularly within content management systems like WordPress, privilege escalation is often achieved by exploiting misconfigured permissions or logic errors that fail to properly validate user roles against requested actions. The Jobs plugin, which facilitates job listing functionalities, contains code paths where it fails to verify whether a contributor has the administrative rights necessary to perform file deletion tasks. This oversight creates a direct pathway for malicious actors who have compromised low-privilege accounts to manipulate server-side resources beyond their intended scope of access.
From a technical perspective, this vulnerability is classified under CWE-250, which denotes Execution with Unnecessary Privileges, and more specifically aligns with CWE-732, the improper assignment of permissions that leads to privilege escalation. The core flaw lies in the application logic where file deletion functions are invoked without adequate checks against the current user's capability set. In WordPress environments, capabilities such as delete_posts or manage_options are strictly gated by role definitions. However, if a plugin directly interacts with server directories using system-level commands like unlink() or similar filesystem operations based on input parameters that can be manipulated by any logged-in user, it bypasses these safeguards. An attacker leveraging this flaw could construct specific HTTP requests targeting the vulnerable endpoints of the Jobs plugin, supplying file paths as arguments to trigger deletion sequences. Because the validation logic is absent or flawed, the server processes these commands regardless of the requester's role, effectively granting contributors administrative-level control over critical files.
The operational impact of this vulnerability extends far beyond simple data loss within the application database. By enabling arbitrary file deletion, an attacker can target configuration files such as wp-config.php, which contains sensitive database credentials and security keys, or core plugin and theme files that maintain site integrity. The destruction of these files typically results in a complete denial of service for the website, rendering it inaccessible to legitimate users due to fatal PHP errors during initialization. Furthermore, if an attacker can delete specific log files or audit trails, they may obscure their tracks, complicating forensic analysis and incident response efforts. In more complex scenarios, depending on how other plugins interact with deleted resources, this could potentially lead to further instability or create conditions for additional vulnerabilities such as local file inclusion if the application attempts to load non-existent includes without proper error handling.
To mitigate this risk, immediate action is required by system administrators and developers managing WordPress installations using affected versions of the Jobs plugin. The most effective remediation strategy is to upgrade the plugin to version 2.8.3 or later, where the vendor has presumably implemented strict capability checks before executing file operations. Until an update can be applied, temporary mitigations include restricting access to the wp-admin directory through IP whitelisting if feasible, although this does not fully address API-based attacks. Additionally, implementing a Web Application Firewall with rules that detect anomalous patterns in parameter values associated with file manipulation functions can provide a layer of defense against exploitation attempts. It is also advisable to enforce strong password policies and multi-factor authentication for all user accounts, particularly those with contributor or higher privileges, to reduce the likelihood of account compromise which serves as the prerequisite vector for this vulnerability. Regular auditing of plugin code for proper use of WordPress capability functions like current_user_can() is essential to prevent similar issues in future updates.