High severity · published Nov 20, 2025
CVE-2025-13434
jameschz Hush Framework HTTP Host Header Util.php http headers for scripting syntax
7.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HF
Hush Framework · jameschz
2.0 · source: vendor
HU
Hush · Jameschz
2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-13434
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-13434
Exploit
https://github.com/lakshayyverma/CVE-Discovery/blob/main/hush.md
Permissions Required
https://vuldb.com/?ctiid.332978
Third Party Advisory
https://vuldb.com/?id.332978
Third Party Advisory
https://vuldb.com/?submit.687568
