CVE-2025-5396CWE-94

Bears Backup <= 2.0.0 - Unauthenticated Remote Code Execution

Critical · published July 17, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
58.7
In the wild
Unconfirmed
What it is

🚨 A simple lack of checks in the Bears Backup plugin could turn your WordPress site into an attacker's playground! 🔥 Think of the bbackup_ajax_handle() function like a restaurant kitchen without a head chef – anyone can walk in and start cooking whatever they want, potentially ruining the meal for everyone. 🍽️ An unauthenticated attacker could execute code remotely, allowing them to inject backdoors or create new admin accounts. This could lead to full control over your server, enabling them to wreak absolute havoc on your site and users. The consequences could be devastating!

Put simply

Think of the bbackup_ajax_handle() function like a restaurant kitchen without a head chef – anyone can walk in and start cooking whatever they want, potentially ruining the meal for everyone. 🍽️ This Remote Code Execution vulnerability arises because the bbackup_ajax_handle() function lacks a capability check and directly uses user-supplied input with call_user_func(), making it easy for attackers to execute arbitrary code.

What to do

An unauthenticated attacker could execute code remotely, allowing them to inject backdoors or create new admin accounts. This could lead to full control over your server, enabling them to wreak absolute havoc on your site and users. The consequences could be devastating! Update the Bears Backup plugin immediately to version 2.0.1 or later. Additionally, review site permissions and consider disabling or uninstalling plugins that may not be actively maintained. Don’t forget to audit user roles to prevent unauthorized access! You’ve got this! By updating now, you’re taking critical steps to secure your site. 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00879 · 58.7th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2025-07-17T01:44Z
EPSS history
Timeline
  • 17 JUL 01:44Z
    Bears Backup <= 2.0.0 - Unauthenticated Remote Code Execution
    cvelistv5