Vulnerability in Kiboit Phastpress
CVE-2025-14388
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (39.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Kiboit Phastpress — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/eec9bbc0-5a68-4624-a672-bd622…
- plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php
- plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php
- plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php
- plugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php
- plugins.trac.wordpress.org/changeset/3418139
Frequently asked questions
- What is CVE-2025-14388?
- CVE-2025-14388 is a critical-severity vulnerability in Kiboit Phastpress, classified under CWE-158. CVSS score: 9.8/10. Published 2025-12-23.
- How severe is CVE-2025-14388?
- Critical severity. CVSS v3 base score is 9.8 out of 10.