CVE-2026-39641

Vulnerability

Overview The Blackfyre theme for WordPress, versions from n/a through 2.5.4, contains a Cross-Site Request Forgery (CSRF) vulnerability [1]. This flaw arises because the theme does not properly validate or include a nonce when processing state-changing requests, allowing an attacker to craft malicious links or forms that, when visited by an authenticated administrator, can trigger unintended actions under the victim's session.

Exploitation

Details To exploit this CSRF, an attacker must trick a logged-in user with sufficient privileges (e.g., an administrator) into clicking a crafted link or submitting a malicious form [1]. No direct authentication is required for the attacker, as the attack relies on the victim's active session. The vulnerability is rated with a CVSS v3 base score of 6.5 (Medium), indicating a moderate severity due to the need for user interaction and the possible impact on data integrity or configuration.

Impact

Successful exploitation could allow an attacker to force the victim to unknowingly execute unintended actions, such as changing theme settings, creating new admin accounts, or modifying site content, all under the context of the victim's current authentication [1]. This type of vulnerability is often used in mass-exploit campaigns targeting thousands of sites regardless of size or popularity.

Mitigation

As of the published date, users are strongly advised to update the Blackfyre theme to a version newer than 2.5.4 as soon as possible [1]. If an immediate update is not feasible, website owners should consult their hosting provider or a developer for temporary workarounds.