CVE Catalog

CVE-2026-18386

MediumCVSS 4.9
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.75%

53th percentile - higher than 53% of all known CVEs

Summary

The WP BackItUp Community Edition plugin for WordPress is vulnerable to Directory Traversal in all versions up to and including 2.1.0 via the 'backup_file' parameter. An authenticated attacker with administrator-level access or above can read arbitrary files on the server, including sensitive information.

Risk Assessment

An attacker can access confidential files such as configurations or credentials, potentially leading to further privilege escalation or data leakage.

Recommendation

Update the WP BackItUp Community Edition plugin to a version newer than 2.1.0. Until then, restrict access to backup functionality and monitor for unusual file read requests.

Related vulnerabilities

Original NVD description (English source)

The WP BackItUp Community Edition plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.1.0 via the 'backup_file' parameter parameter. This makes it possible for authenticated attackers, with administrator-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The basename() normalization present in the handler only executes when the traversed target path does not exist, providing no protection against reads of existing files.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS