VULNERABILITY INTELLIGENCE
CVE-2026-0809
CVSS score6.3 MEDIUM
EPSS probability0.26%
CISA KEVNot currently listed
Published2026-03-12
Last modified2026-06-17
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Description
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.
Weakness classification
- CWE-261: Weak Encoding for Password