CVE-2026-107508: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in Ultimate Multisite
Description
The Ultimate Multisite WordPress plugin before 2.17.2 does not validate a user-supplied value used to select a file to include, allowing unauthenticated attackers to include and read arbitrary local files, including the WordPress configuration file.
CVSS v3.1
Score 8.6high
Affected software
Ultimate Multisite
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-107508 is a CWE-22 path traversal vulnerability in the Ultimate Multisite WordPress plugin versions prior to 2.17.2. The plugin fails to validate a user-supplied value that determines which file to include, enabling unauthenticated attackers to read arbitrary local files. This includes critical files like the WordPress configuration file, potentially exposing sensitive information.
Potential Impact
An attacker can exploit this vulnerability to read arbitrary files on the server without authentication. Access to sensitive files such as the WordPress configuration file may disclose database credentials and other secrets, potentially leading to further compromise of the WordPress installation or server.
Mitigation Recommendations
Upgrade the Ultimate Multisite plugin to version 2.17.2 or later, where this vulnerability is fixed. No other mitigation guidance is provided, and patch status is confirmed by the affected version range indicating the fix is in 2.17.2.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-10-08T09:28:25.066Z
- State
- PUBLISHED
Threat ID: 6acf22562cdf04f656513b94
Added to database: 10/14/2026, 06:33:58 UTC
Last enriched: 10/14/2026, 07:04:57 UTC
Last updated: 10/14/2026, 14:04:16 UTC
Views: 2
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