CVE-2026-26928: CWE-354 Improper Validation of Integrity Check Value in Krajowa Izba Rozliczeniowa SzafirHost
CVE-2026-26928 is a high-severity vulnerability in Krajowa Izba Rozliczeniowa's SzafirHost software. The issue arises because SzafirHost does not verify the hash or the vendor's digital signature of uploaded DLL, SO, JNILIB, or DYLIB files, allowing an attacker to supply a malicious file that is saved in the user's temporary folder and executed by the application. JAR files are properly verified, but this gap in validation for other file types creates a risk of arbitrary code execution. This vulnerability was fixed in SzafirHost version 1. 1. 0.
AI Analysis
Technical Summary
SzafirHost downloads files in the context of the initiating web page and updates its dynamic library accordingly. While JAR files are verified against trusted hashes or vendor digital signatures, the application fails to perform similar integrity checks on uploaded DLL, SO, JNILIB, or DYLIB files. This improper validation (CWE-354) allows attackers to provide malicious files that get saved and executed from the user's temporary folder. The vulnerability enables remote code execution without requiring user interaction or privileges. The issue has been addressed in version 1.1.0 of SzafirHost.
Potential Impact
An attacker can supply malicious dynamic library files that SzafirHost will save and execute in the user's temporary folder. This can lead to remote code execution with no user interaction or privileges required, posing a significant security risk to affected systems running vulnerable versions of SzafirHost prior to 1.1.0.
Mitigation Recommendations
This vulnerability is fixed in SzafirHost version 1.1.0. Users and administrators should upgrade to version 1.1.0 or later to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-26928: CWE-354 Improper Validation of Integrity Check Value in Krajowa Izba Rozliczeniowa SzafirHost
Description
CVE-2026-26928 is a high-severity vulnerability in Krajowa Izba Rozliczeniowa's SzafirHost software. The issue arises because SzafirHost does not verify the hash or the vendor's digital signature of uploaded DLL, SO, JNILIB, or DYLIB files, allowing an attacker to supply a malicious file that is saved in the user's temporary folder and executed by the application. JAR files are properly verified, but this gap in validation for other file types creates a risk of arbitrary code execution. This vulnerability was fixed in SzafirHost version 1. 1. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
SzafirHost downloads files in the context of the initiating web page and updates its dynamic library accordingly. While JAR files are verified against trusted hashes or vendor digital signatures, the application fails to perform similar integrity checks on uploaded DLL, SO, JNILIB, or DYLIB files. This improper validation (CWE-354) allows attackers to provide malicious files that get saved and executed from the user's temporary folder. The vulnerability enables remote code execution without requiring user interaction or privileges. The issue has been addressed in version 1.1.0 of SzafirHost.
Potential Impact
An attacker can supply malicious dynamic library files that SzafirHost will save and execute in the user's temporary folder. This can lead to remote code execution with no user interaction or privileges required, posing a significant security risk to affected systems running vulnerable versions of SzafirHost prior to 1.1.0.
Mitigation Recommendations
This vulnerability is fixed in SzafirHost version 1.1.0. Users and administrators should upgrade to version 1.1.0 or later to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CERT-PL
- Date Reserved
- 2026-02-16T09:01:03.143Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69ce7bd9e6bfc5ba1ddfe6bd
Added to database: 4/2/2026, 2:23:21 PM
Last enriched: 4/10/2026, 12:08:47 AM
Last updated: 5/20/2026, 4:10:24 AM
Views: 54
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