CVE-2025-13434 jameschz Hush Framework HTTP Host Header Util.php http headers for scripting syntax
Remote attackers can inject malicious scripts via the HTTP Host header in Hush Framework, potentially leading to code execution or security bypass.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-13434?
CVE-2025-13434 is a medium-severity cross-site scripting vulnerability in jameschz Hush Framework, published on 20 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in jameschz Hush Framework 2.0. The impacted element is an unknown function of the file Hush\hush-lib\hush\Util.php of the component HTTP Host Header Handler. This manipulation of the argument $_SERVER['HOST'] causes improper neutralization of http headers for scripting syntax. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be exploited. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-644
Which versions are affected by CVE-2025-13434?
It affects 1 product.
Products include Jameschz Hush.
How do I fix CVE-2025-13434?
No fix has been published for CVE-2025-13434 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-13434 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-13434 exists.
Sources
Also known as GHSA-xfj2-w4fv-cg6j.