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 20.0.380.92.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.3
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- EPSS probability
- 0.25%
- CWE
- CWE-261
- Published
- 2026-03-12
- Last modified
- 2026-03-12
Affected products
- Streamsoft Streamsoft Prestiż
Weakness type
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