CVE-2021-4031

Syltek application before its 10.22.00 version, does not correctly check that a product ID has a valid payment associated to it. This could allow an attacker to forge a request and bypass the payment system by marking items as payed without any verification.

• https://www.incibe-cert.es/en/early-warning/security-advisories/syltek-insufficient-verification-data-authenticity
  Third Party Advisory
• https://www.incibe-cert.es/en/early-warning/security-advisories/syltek-insufficient-verification-data-authenticity
  Third Party Advisory