CVE-2026-101266
Received Received - Intake

Checkout Logic Flaw Enables Check-in Bypass

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: rami.io

Description
A logic flaw in the checkout flow allows users to bypass validations performed during the check-in by skipping entire check-in steps.

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-101266
EUVD
EUVD-2026-88746

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
pretix pretix 2026.7.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

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Executive Summary

This vulnerability is a logic flaw in the checkout flow of pretix that allows users to bypass validations during check-in by skipping entire check-in steps. This means unauthorized actions may occur without proper verification.

Impact Analysis

The impact includes potential unauthorized bypass of check-in validations, leading to improper access or actions. However, the severity is low, and exploitation requires user interaction.

Compliance Impact

The vulnerability allows users to bypass validations during check-in, which could lead to unauthorized access or data integrity issues. This may impact compliance with GDPR (data protection) and HIPAA (healthcare data) by potentially exposing sensitive user data or violating audit requirements due to skipped validations.

Mitigation Strategies

Update your pretix installation to version 2026.7.1 or later to address the logic flaw in the checkout flow.

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