CVE-2026-2418 is an authentication bypass vulnerability categorized under CWE-287 (Improper Authentication) found in the Login with Salesforce WordPress plugin through version 1.0.2. The vulnerability stems from the plugin's failure to properly verify that users attempting to log in via Salesforce are authorized to do so. Specifically, the plugin allows unauthenticated users to authenticate as any user on the WordPress site, including administrators, by simply providing a valid email address associated with that user. This bypasses normal authentication mechanisms and effectively grants attackers full access to the WordPress site without requiring passwords or multi-factor authentication. The vulnerability affects all versions up to 1.0.2, with no patches currently available. Although no known exploits have been reported in the wild, the flaw's simplicity and severity make it a significant threat. The plugin is commonly used to enable Salesforce single sign-on (SSO) for WordPress sites, often in enterprise environments where Salesforce is heavily integrated. The lack of proper authorization checks means attackers can impersonate high-privilege users, potentially leading to data breaches, site defacement, or further compromise of connected systems. The vulnerability was publicly disclosed in March 2026, with WPScan as the assigner. No CVSS score has been assigned yet.

The impact of CVE-2026-2418 is severe for organizations using the Login with Salesforce plugin to integrate Salesforce authentication with their WordPress sites. Successful exploitation allows attackers to bypass authentication entirely and assume the identity of any user, including administrators, by knowing only the user's email address. This can lead to full site compromise, unauthorized access to sensitive data, modification or deletion of content, installation of malicious code, and lateral movement within the network. Enterprises relying on Salesforce for identity management and WordPress for content management or customer-facing portals are particularly vulnerable. The breach of administrator accounts can result in loss of control over the website, reputational damage, regulatory penalties, and potential exposure of customer or business data. Since no authentication or user interaction is required, the attack surface is broad and can be automated, increasing the risk of widespread exploitation once a public exploit is developed. The absence of patches further exacerbates the threat, making timely mitigation critical.

Organizations should immediately audit their WordPress sites for the presence of the Login with Salesforce plugin and verify the version in use. If version 1.0.2 or earlier is installed, disable the plugin until a security patch or update is released by the vendor. In the absence of an official patch, consider removing the plugin entirely or replacing it with alternative, secure Salesforce authentication solutions that properly validate user authorization. Implement additional monitoring and alerting for unusual login activities, especially logins from unknown IP addresses or multiple failed attempts followed by successful logins. Enforce strong access controls and multi-factor authentication on WordPress administrator accounts independent of the plugin. Review and restrict user email exposure to minimize attackers' ability to guess valid emails. Regularly back up WordPress sites and maintain incident response plans to quickly recover from potential compromises. Engage with the plugin vendor or community to track patch releases and apply updates promptly once available.