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CVE-2025-14388

9.8 · CRITICAL

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.

Published Dec 23, 2025CWE-158EPSS 0.48%

Overview

CVE-2025-14388 is a critical-severity vulnerability. It was published on December 23, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9570Refplugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9597Refplugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9608Refplugins.trac.wordpress.org/browser/phastpress/tags/3.6/sdk/phast.php#L9641Refplugins.trac.wordpress.org/changeset/3418139Refwww.wordfence.com/threat-intel/vulnerabilities/id/eec9bbc0-5a68-4624-a672-bd6227d6fa45?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2025-14388?

CVE-2025-14388 is a critical-severity vulnerability. It was published on December 23, 2025 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-14388?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-14388?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-14388?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-14388 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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