CVE-2026-26928 HIGH

CVE-2026-26928: Lack of Dynamic Library Validation in SzafirHost

Vendor Krajowa Izba Rozliczeniowa
Product SzafirHost
Weakness CWE-354
Published April 2, 2026
Last update April 2, 2026

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

SzafirHost downloads necessary files in the context of the initiating web page. When called, SzafirHost updates its dynamic library. JAR files are correctly verified based on a list of trusted file hashes, and if a file was not on that list, it was checked to see if it had been digitally signed by the vendor. The application doesn't verify hash or vendor's digital signature of uploaded DLL, SO, JNILIB or DYLIB file. The attacker can provide malicious file which will be saved in users /temp folder and executed by the application. This issue was fixed in version 1.1.0.

Key dates

02Disclosure timeline

April 2, 2026 CVE published
April 2, 2026 Record updated