CVE-2026-48889

Vulnerability

A privilege escalation vulnerability exists in the Amelia plugin for WordPress, specifically in versions 2.3 and earlier. The flaw allows a subscriber-level user to escalate their privileges to a higher level within the WordPress site. This is due to improper access controls or authorization checks in the plugin's code, enabling an authenticated user with minimal permissions to perform actions or access data reserved for higher-privileged roles. The vulnerability is present in all installations running Amelia up to and including version 2.3 [1].

Exploitation

To exploit this vulnerability, an attacker needs a valid subscriber-level account on a WordPress site running the vulnerable Amelia plugin. No additional network position or user interaction beyond login is required. The attacker would then send crafted requests to the plugin's endpoints that fail to properly verify user permissions, thereby gaining access to functionality intended for administrators or other high-privilege roles. The exact request sequence is not publicly detailed but involves manipulating parameters or accessing administrative actions without proper authorization [1].

Impact

Successful exploitation allows an attacker to escalate from a subscriber account to a higher-privileged role, such as administrator. This grants the attacker the ability to take full control of the WordPress website, including modifying content, installing malicious plugins or themes, managing users, and potentially executing arbitrary code. The confidentiality, integrity, and availability of the site and its data are compromised [1].

Mitigation

Amelia plugin version 2.4 is the fixed version that resolves the vulnerability. Users are strongly advised to update to version 2.4 or later immediately. For those unable to update, Patchstack provides a mitigation rule to block attacks until the update is applied. Users of Patchstack can also enable auto-update for vulnerable plugins. The vulnerability is expected to be exploited in mass campaigns, so prompt action is critical [1].