CVE-2025-10579

BackWPup 5 - 5.5.0 - Missing Authorization to Sensitive Information Exposure

2025-10-24 15:31
Dmitrii Ignatyev

Strategic Overview

Status
Patched in 5.5.1
Affected Plugin
BackWPup – WordPress Backup & Restore Plugin
Affected Version
5 – 5.5.0
CVSS
5.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2025-10579
View all BackWPup – WordPress Backup & Restore Plugin vulnerabilities

At a glance

CVE-2025-10579 is a medium-severity Missing Authorization vulnerability in the BackWPup WordPress plugin, affecting versions 5 – 5.5.0. It carries a CVSS score of 5.3 (reachable over the network; high confidentiality impact). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 5.5.1; sites on affected versions should update now. Disclosed October 2025, reported by Dmitrii Ignatyev.

Vulnerability Overview

The BackWPup – WordPress Backup & Restore Plugin plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the 'backwpup_working' AJAX action in versions 5 through 5.5.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to retrieve access to a back-up's filename while a backup is running. This information has little value on it's own, but could be used to aid in a brute force attack to retrieve back-up contents in limited environments (i.e. NGINX).

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-862: Missing Authorization

BackWPup 5 – 5.5.0 carries this weakness at backwpup_working, and reaching it takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For BackWPup the fix is 5.5.1: builds 5 – 5.5.0 are affected, anything from 5.5.1 onward is not.

Remediation

Update to version 5.5.1, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: BackWPup 5.5.1 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-10579https://www.wordfence.com/threat-intel/vulnerabilities/id/1e9a1484-2000-47fa-9890-fa02eddabcd9https://nvd.nist.gov/vuln/detail/CVE-2025-10579

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C