CVE-2025-14388
PhastPress <= 3.7 - Unauthenticated Arbitrary File Read via Null Byte Injection
- State
- Published
- Severity
- 9.8 Critical
- Published
- Dec 23, 2025
- Updated
- Apr 8, 2026
- Reserved
- Dec 9, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Wordfence |
Weaknesses
- CWE-158 Improper Neutralization of Null Byte or NUL Character
Affected Products
| Product | Versions |
|---|---|
PhastPresskiboit |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/eec9bbc0-5a68-4624-a672-bd6227d6fa45?source=cve
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9641
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9608
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9570
- https://plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9597
- https://plugins.trac.wordpress.org/changeset/3418139
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.