{"id":"CVE-2026-106036","title":"Improper certificate validation in Szafir","summary":"Szafir accepts any client or server certificate without performing certificate and hostname validation, allowing HTTPS connections without authenticating the remote server. An attacker can provide an arbitrary SSL/TLS certificate and cau…","severity":"medium","cvss":6.9,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-295"],"vendor":"Krajowa Izba Rozliczeniowa","product":"Szafir","affected":["Szafir <= 2.0"],"published":"2026-10-29","updated":"2026-10-29","sourceUpdated":"2026-10-29T15:08:02.788Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-106036","references":[{"url":"https://cert.pl/posts/2026/10/CVE-2026-93570"},{"url":"https://www.elektronicznypodpis.pl/"}],"tags":["cve.org"],"epss":0.00167,"epssPercentile":0.05922,"ingestedAt":"2026-11-01T20:00:16.956Z","slug":"CVE-2026-106036","body":"## Overview\n\nSzafir accepts any client or server certificate without performing certificate and hostname validation, allowing HTTPS connections without authenticating the remote server. An attacker can provide an arbitrary SSL/TLS certificate and cause the application to download an update file from their server.\n\n\n\nThis issue was fixed in version 2.0 build 708.\n\n## Affected\n\n- `Szafir <= 2.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":38,"depthScoreParts":{"impact":38,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}