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Vulnerabilities

CVE-2026-9058 | BDVDB-2026-334741 Detail

Krajowa Izba RozliczeniowaSzafir SDK

Description#

For untrusted certificates that contain the "Authority Information Access - caIssuers URI" extension, Szafir SDK will automatically download the parent CA certificate from the specified URL and will import it to its trust store as a "nonqualified" certificate. In such a case, Szafir SDK returns a success status code of 0 ("Positively verified") upon successful cryptographic verification and a certificate status of "nonqualified". For other types of untrusted certificates, Szafir SDK returns a success status code of 0 ("Positively verified") upon successful cryptographic verification and a certificate status of "nondetermined". This may lead integrating applications to incorrectly treat the digital signature as valid despite an untrusted certificate chain. This flaw enables authentication bypass and user impersonation: (1) in use-cases other than qualified certificate authentication, or (2) if the qualified certificate authentication use-case is not correctly implemented by the integrating application. This issue was fixed in version 1.8.463.2.

Impact#

CAPEC-115 Authentication Bypass

Weaknesses#

  • CWE-637 Unnecessary Complexity in Protection Mechanism (Not Using 'Economy of Mechanism')
  • CWE-393 Return of Wrong Status Code
  • CWE-295 Improper Certificate Validation

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.
  2. Version 2Most recent update recorded in the CVE List.