A logic flaw in the pretix checkout process permits users to omit entire check‑in validation steps, allowing them to proceed through the flow without the intended checks being performed. This could enable the creation or acceptance of tickets that have not been properly verified, potentially undermining event security or access control. The primary impact is a failure of input validation, classified as CWE‑20, which may allow unauthorized transactions or fraudulent use of tickets.

The vulnerability affects pretix, the vendor and product listed. No specific version or patch information is supplied, so any unpatched installation of pretix that has not yet applied a future fix is at risk.

The CVSS score of 1.3 indicates a very low severity. No EPSS score is available and the vulnerability is not included in CISA KEV, suggesting limited exploitation evidence to date. The likely attack vector is through direct manipulation of the checkout HTTP requests to skip validation steps, inferred from the description of a logic flaw in the checkout flow. Operators should assume that an attacker could trigger the bypass by sending crafted requests that skip the validation logic. Additional details are available at https://pretix.eu/about/en/blog/20260929-release-2026-7-1/.