Streamsoft vulnerabilities

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Published CVEs affecting Streamsoft products: 1 record(s), with severity, exploitation and fixes.

Streamsoft Prestiż 1

Exploited only (KEV) →

CVE-2026-0809 Medium · 6.3 CWE-261 Mar 12, 2026

Weak KSeF token encoding in Streamsoft Prestiż

Use of a custom token encoding algorithm in Streamsoft Prestiż software allows the value of the KSeF (Krajowy System e-Faktur) token to be guessed after analyzing how tokens with know values are encoded. This issue was fixed in version 20.0.380.92.