PhastPress <= 3.7 — Unauthenticated Arbitrary File Read via Null Byte Injection
CVE-2025-14388Published · Updated Action summary
Affected: ≤3.7Update to 3.8 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
PhastPress phastpress
- Affected≤ 3.7
- Patched in3.8
Update to 3.8 or newer.
You are affected if you run ≤ 3.7. Version 3.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under PhastPress.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 3.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch PhastPress to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to shark3y.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in PhastPress
All 3| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.3 | Unauthenticated Server-Side Request Forgery via 'src' Parameter ≤3.10Update to 3.11 | CVE-2026-3712 | |
| Medium6.1 | Open Redirect ≤1.110Update to 1.111 | CVE-2021-24210 |
- High7.3Unauthenticated Server-Side Request Forgery via 'src' Parameter
≤3.10Update to 3.11
- Medium6.1Open Redirect
≤1.110Update to 1.111
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.