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

Quick assessment

Affected
Krajowa Izba Rozliczeniowa SzafirHost
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Krajowa Izba Rozliczeniowa SzafirHost是波兰Krajowa Izba Rozliczeniowa公司的一款电子签名服务端组件，提供证书管理与签名处理能力。 Krajowa Izba Rozliczeniowa SzafirHost 1.1.0之前版本存在安全漏洞，该漏洞源于未验证DLL、SO、JNILIB或DYLIB文件的哈希或数字签名，可能导致攻击者执行恶意文件。

AI Predicted 7.5 Difficulty: Easy EPSS 0.21% · P11
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I. Basic Information for CVE-2026-26928

Vulnerability Information
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Vulnerability Title
Lack of Dynamic Library Validation in SzafirHost
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
完整性检查值验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Krajowa Izba Rozliczeniowa SzafirHost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Krajowa Izba Rozliczeniowa SzafirHost是波兰Krajowa Izba Rozliczeniowa公司的一款电子签名服务端组件，提供证书管理与签名处理能力。 Krajowa Izba Rozliczeniowa SzafirHost 1.1.0之前版本存在安全漏洞，该漏洞源于未验证DLL、SO、JNILIB或DYLIB文件的哈希或数字签名，可能导致攻击者执行恶意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Krajowa Izba Rozliczeniowa SzafirHost 0 ~ 1.1.0 -

II. Public POCs for CVE-2026-26928

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III. Intelligence Information for CVE-2026-26928

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Security Blog Posts for CVE-2026-26928 (1)

IV. Related Vulnerabilities

Same product: SzafirHost
Same vendor: Krajowa Izba Rozliczeniowa
Same weakness: CWE-354

V. Comments for CVE-2026-26928

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