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How the CVE Works
The vulnerability exists in the HTTP Host Header Handler within the file `Hush\hush-lib\hush\Util.php` of jameschz Hush Framework 2.0. An unknown function in this component improperly processes the `$_SERVER[‘HOST’]` argument without adequate sanitization. This flaw constitutes an “Improper Neutralization of HTTP Headers for Scripting Syntax” (CWE-644). Attackers can remotely exploit it by sending crafted HTTP requests with malicious Host headers. The framework fails to neutralize scripting syntax within these headers, allowing the injection of harmful content. The exploit is network-based, requires no privileges or user interaction, and has a public proof-of-concept available. This can lead to attacks like Cross-Site Scripting (XSS), HTTP response manipulation, or web cache poisoning. The vendor was unresponsive to disclosure attempts.
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Platform: jameschz Hush Framework
Version: 2.0
Vulnerability: HTTP Header Injection
Severity: Medium
date: 2025-11-20
Prediction: No patch expected
What Undercode Say:
`curl -H “Host: ” http://target.site/`
`git clone https://github.com/lakshayyverma/CVE-Discovery.git`
`grep -r “\$_SERVER\[‘HOST’\]” hush-lib/`
`php -l hush-lib/hush/Util.php`
How Exploit:
Remote attackers send HTTP requests with a maliciously crafted `Host` header. The vulnerable function directly uses the unsanitized `$_SERVER[‘HOST’]` value, typically for operations like generating links or redirects. Injected scripting syntax is then reflected in the HTTP response, enabling client-side attacks like XSS.
Protection from this CVE
Disable affected framework.
Deploy header-sanitizing WAF.
Manually validate `$_SERVER[‘HOST’]`.
Impact:
Integrity loss (Low).
Potential XSS attacks.
Cache poisoning possible.
No confidentiality impact.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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