CVE-2026-9058: CWE-637 Unnecessary Complexity in Protection Mechanism (Not Using 'Economy of Mechanism') in Krajowa Izba Rozliczeniowa Szafir SDK
CVE-2026-9058 is a critical vulnerability in the Krajowa Izba Rozliczeniowa Szafir SDK where the digital signature verification process incorrectly returns a success status even when the signer's certificate trust status is undetermined. This flaw allows consuming applications to accept signatures as valid despite an unverified certificate chain, potentially enabling authentication bypass and user impersonation. The issue has been fixed in version 463 of the SDK.
AI Analysis
Technical Summary
The Szafir SDK's cryptographic signature verification returns a positive verification code (code == 0) even when the signer's certificate trust status is 'nondetermined'. This means that applications relying on this verification may incorrectly accept signatures without a verified certificate chain, violating the principle of economy of mechanism and causing unnecessary complexity in the protection mechanism. This vulnerability is tracked as CVE-2026-9058 with a CVSS 4.0 score of 9.3, indicating critical severity. The vendor fixed this issue in version 463.
Potential Impact
Applications using affected versions of the Szafir SDK may incorrectly treat digital signatures as valid despite the signer's certificate trust status being unverified. This can lead to authentication bypass and user impersonation, undermining the security of systems relying on this SDK for signature verification.
Mitigation Recommendations
Upgrade to Szafir SDK version 463 or later, where this vulnerability has been fixed. Patch status is confirmed by the vendor's advisory stating the issue is resolved in version 463. No additional mitigations are indicated.
CVE-2026-9058: CWE-637 Unnecessary Complexity in Protection Mechanism (Not Using 'Economy of Mechanism') in Krajowa Izba Rozliczeniowa Szafir SDK
Description
CVE-2026-9058 is a critical vulnerability in the Krajowa Izba Rozliczeniowa Szafir SDK where the digital signature verification process incorrectly returns a success status even when the signer's certificate trust status is undetermined. This flaw allows consuming applications to accept signatures as valid despite an unverified certificate chain, potentially enabling authentication bypass and user impersonation. The issue has been fixed in version 463 of the SDK.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Szafir SDK's cryptographic signature verification returns a positive verification code (code == 0) even when the signer's certificate trust status is 'nondetermined'. This means that applications relying on this verification may incorrectly accept signatures without a verified certificate chain, violating the principle of economy of mechanism and causing unnecessary complexity in the protection mechanism. This vulnerability is tracked as CVE-2026-9058 with a CVSS 4.0 score of 9.3, indicating critical severity. The vendor fixed this issue in version 463.
Potential Impact
Applications using affected versions of the Szafir SDK may incorrectly treat digital signatures as valid despite the signer's certificate trust status being unverified. This can lead to authentication bypass and user impersonation, undermining the security of systems relying on this SDK for signature verification.
Mitigation Recommendations
Upgrade to Szafir SDK version 463 or later, where this vulnerability has been fixed. Patch status is confirmed by the vendor's advisory stating the issue is resolved in version 463. No additional mitigations are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- CERT-PL
- Date Reserved
- 2026-05-20T06:36:10.929Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a145147a5ae1af1aaa32f6b
Added to database: 5/25/2026, 1:40:23 PM
Last enriched: 5/25/2026, 1:55:19 PM
Last updated: 5/25/2026, 3:04:43 PM
Views: 3
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