The PhastPress plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Read via null byte injection in all versions up to, and including, 3.7. This is due to a discrepancy between the extension validation in `getExtensionForURL()` which operates on URL-decoded paths, and `appendNormalized()` which strips everything after a null byte before constructing the filesystem path. This makes it possible for unauthenticated attackers to read arbitrary files from the webroot, including wp-config.php, by appending a double URL-encoded null byte (%2500) followed by an allowed extension (.txt) to the file path.
History

Tue, 23 Dec 2025 09:30:00 +0000

Type Values Removed Values Added
Description The PhastPress plugin for WordPress is vulnerable to Unauthenticated Arbitrary File Read via null byte injection in all versions up to, and including, 3.7. This is due to a discrepancy between the extension validation in `getExtensionForURL()` which operates on URL-decoded paths, and `appendNormalized()` which strips everything after a null byte before constructing the filesystem path. This makes it possible for unauthenticated attackers to read arbitrary files from the webroot, including wp-config.php, by appending a double URL-encoded null byte (%2500) followed by an allowed extension (.txt) to the file path.
Title PhastPress <= 3.7 - Unauthenticated Arbitrary File Read via Null Byte Injection
Weaknesses CWE-158
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2025-12-23T09:20:03.420Z

Reserved: 2025-12-09T20:27:24.165Z

Link: CVE-2025-14388

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-12-23T10:15:43.673

Modified: 2025-12-23T10:15:43.673

Link: CVE-2025-14388

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.