CVE-2023-45104 in BetterLinks Plugin
Summary
by MITRE • 01/02/2025
Missing Authorization vulnerability in WPDeveloper BetterLinks allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects BetterLinks: from n/a through 1.6.0.
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Analysis
by VulDB Data Team • 01/24/2026
The CVE-2023-45104 vulnerability represents a critical authorization flaw within the WPDeveloper BetterLinks plugin for WordPress, specifically impacting versions ranging from the initial release through 1.6.0. This security weakness stems from inadequate access control configuration that permits unauthorized users to manipulate or access restricted functionality within the plugin's administrative interface. The vulnerability manifests as a failure to properly validate user permissions before executing privileged operations, creating a pathway for malicious actors to exploit the system's security controls.
This missing authorization issue falls under the CWE-863 category of Incorrect Authorization, which specifically addresses situations where the system fails to properly enforce access control policies. The vulnerability operates at the application layer of the OSI model, where the WordPress plugin fails to validate whether incoming requests originate from authenticated and authorized users with appropriate privileges. The flaw allows attackers to bypass standard access controls and potentially execute administrative functions that should be restricted to users with proper authorization levels. The impact is particularly severe in WordPress environments where plugins often handle sensitive configuration data and administrative capabilities.
The operational implications of this vulnerability extend beyond simple unauthorized access, as it enables attackers to manipulate link management features that may contain sensitive data or configuration parameters. An attacker exploiting this vulnerability could potentially modify existing links, create new malicious links, or access confidential information stored within the plugin's database tables. The attack surface is amplified in multi-user WordPress environments where different roles have varying levels of access, as the flaw allows lower-privileged users to escalate their capabilities. This vulnerability directly aligns with ATT&CK technique T1078.004 which covers Valid Accounts and T1068 which addresses Exploitation for Privilege Escalation, demonstrating how improper access control can serve as a gateway for broader system compromise.
Mitigation strategies for CVE-2023-45104 should prioritize immediate plugin updates to version 1.6.1 or later, which contains the necessary authorization fixes. System administrators should also implement additional security measures including role-based access control reviews, regular security audits of installed plugins, and monitoring for unauthorized administrative activities. The WordPress security community recommends maintaining updated plugin versions as a primary defense mechanism, with specific attention to plugins handling user-generated content or administrative functions. Organizations should consider implementing network segmentation and access control lists to limit exposure, while also establishing automated vulnerability scanning processes to identify similar authorization flaws across their WordPress installations. The remediation process must include thorough testing to ensure that the plugin's updated authorization mechanisms function correctly without disrupting legitimate user operations.