WordPress plugin
HTTP Headers security & vulnerabilities
Unpatched vulnerability in the latest version
At least one vulnerability affects the latest version and no fix has been released. Deactivate the plugin or restrict access to the affected feature until the vendor ships a patch.
- Critical0
- High1
- Medium6
- Low0
All HTTP Headers vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Authenticated (Administrator+) External Control of File Name or Path to RCE via 'hh_htpasswd_path' and 'hh_www_authenticate_user' Parameters ≤1.19.2Update to 1.19.3 | CVE-2026-4132 | |
| Medium5.5 | Authenticated (Administrator+) CRLF Injection via Custom Header Values ≤1.19.5No patch available | CVE-2026-2717 | |
| Medium4.4 | Authenticated (Administrator+) Stored Cross-Site Scripting via 'Custom Headers' Plugin Setting ≤1.19.4Update to 1.19.5 | CVE-2026-1379 | |
| Medium5.5 | Server-Side Request Forgery ≤1.18.11Update to 1.19.0 | CVE-2023-37978 | |
| Medium4.4 | Authenticated (Administrator+) Stored Cross-Site Scripting ≤1.18.11Update to 1.19.0 | CVE-2023-37874 | |
| Medium6.6 | Authenticated(Administrator+) Remote Code Execution ≤1.18.10Update to 1.18.11 | CVE-2023-1208 | |
| Medium6.6 | Authenticated(Administrator+) SQL Injection ≤1.18.8Update to 1.18.9 | CVE-2023-1207 |
- High7.2Authenticated (Administrator+) External Control of File Name or Path to RCE via 'hh_htpasswd_path' and 'hh_www_authenticate_user' Parameters
≤1.19.2Update to 1.19.3
- Medium5.5Authenticated (Administrator+) CRLF Injection via Custom Header Values
≤1.19.5No patch available
- Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting via 'Custom Headers' Plugin Setting
≤1.19.4Update to 1.19.5
- Medium5.5Server-Side Request Forgery
≤1.18.11Update to 1.19.0
- Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting
≤1.18.11Update to 1.19.0
- Medium6.6Authenticated(Administrator+) Remote Code Execution
≤1.18.10Update to 1.18.11
- Medium6.6Authenticated(Administrator+) SQL Injection
≤1.18.8Update to 1.18.9
HTTP Headers: common questions
Does HTTP Headers have known vulnerabilities?
Yes. VulnCrest Radar lists 7 known vulnerabilities in HTTP Headers: 1 high, 6 medium. At least one is not fixed in the latest version.
How do I check which version of HTTP Headers I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent HTTP Headers vulnerability?
CVE-2026-4132, published Apr 21, 2026: HTTP Headers <= 1.19.2 - Authenticated (Administrator+) External Control of File Name or Path to RCE via 'hh_htpasswd_path' and 'hh_www_authenticate_user' Parameters. Severity: High (CVSS 7.2).
Is any HTTP Headers vulnerability listed in CISA KEV?
No. None of the known HTTP Headers vulnerabilities is currently listed in the CISA KEV catalog.