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CVE-2026-44088— Remote Code Execution in SzafirHost

AI Predicted 9.8 Difficulty: Easy EPSS 0.45% · P36

Affected Version Matrix 1

VendorProductVersion RangeStatus
Krajowa Izba RozliczeniowaSzafirHost< 1.2.1affected
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I. Basic Information for CVE-2026-44088

Vulnerability Information
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Vulnerability Title
Remote Code Execution in SzafirHost
Source: NVD (National Vulnerability Database)
Vulnerability Description
SzafirHost verifies the signature of the downloaded JAR file using class JarInputStream (reading from the beginning of the file), but loads classes using class JarFile/URLClassLoader (reading the Central Directory from the end). It can lead to remote code execution by allowing an attacker to combine a genuine, signed JAR file with a malicious ZIP file, causing the verification to pass but the malicious class to be loaded. This issue was fixed in version 1.2.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
危险类型文件的不加限制上传
Source: NVD (National Vulnerability Database)
Vulnerability Title
Krajowa Izba Rozliczeniowa SzafirHost 代码问题漏洞
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 1.2.1之前版本存在代码问题漏洞，该漏洞源于使用JarInputStream从文件开头验证下载JAR文件签名，但使用JarFile/URLClassLoader从末尾读取中央目录加载类，可能导致攻击者将真实签名JAR文件与恶意ZIP文件结合
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

VendorProductAffected VersionsCPESubscribe
Krajowa Izba RozliczeniowaSzafirHost 0 ~ 1.2.1 -

II. Public POCs for CVE-2026-44088

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III. Intelligence Information for CVE-2026-44088

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Security Blog Posts for CVE-2026-44088 (1)

IV. Related Vulnerabilities

Same product: SzafirHost
Same vendor: Krajowa Izba Rozliczeniowa
Same weakness: CWE-434

V. Comments for CVE-2026-44088

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