CVE-2026-86826
Received Received - Intake

Directory Traversal in BackWPup WordPress Plugin

Publication date: 2026-10-08

Last updated on: 2026-10-08

Assigner: WPScan

Description
The BackWPup WordPress plugin before 5.7.7 does not properly restrict web access to the working directory it uses during backup restores, allowing unauthenticated attackers, on webservers that do not honour .htaccess rules such as NGINX, to download the full backup archive (database dump and site files, including credentials and secret keys) left behind by an interrupted restore.

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Meta Information

Published
2026-10-08
Last Modified
2026-10-08
Generated
2026-10-08
AI Q&A
2026-10-08
EPSS Evaluated
N/A
NVD
CVE-2026-86826
EUVD
EUVD-2026-94747

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Unknown BackWPup 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability affects the BackWPup WordPress plugin before version 5.7.7. It allows unauthenticated attackers to access sensitive data by exploiting improper restrictions on web access to the plugin's working directory during backup restores. This issue impacts servers like NGINX that do not enforce .htaccess rules.

Detection Guidance

Check if the BackWPup plugin version is below 5.7.7 by inspecting the plugin directory or WordPress admin panel. Look for backup archives in the plugin's working directory, especially on NGINX servers where .htaccess rules are not enforced.

Impact Analysis

Attackers can download full backup archives, including database dumps and site files containing credentials and secret keys, if a restore process is interrupted. This could lead to unauthorized access to sensitive information, potential data breaches, and compromise of the WordPress site.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, potentially violating compliance requirements under GDPR, HIPAA, and other regulations that mandate strict protection of personal and health information. A data breach could result in legal penalties and reputational damage.

Mitigation Strategies

Upgrade the BackWPup plugin to version 5.7.7 or later immediately. Ensure your web server enforces proper access controls for sensitive directories. Remove any existing backup archives from the plugin's working directory.

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