Vulnerability in Streamsoft Prestiż

CVE-2026-0809

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…

EPSS: 0.001 (19.3th percentile) — read the EPSS interpretation.