CVE-2026-101266 - Vulnerability Details - OpenCVE

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

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://pretix.eu/about/en/blog/20260929-release-2026-7-1/

History

Tue, 29 Sep 2026 13:15:00 +0000

Type	Values Removed	Values Added
Description		A logic flaw in the checkout flow allows users to bypass validations performed during the check-in by skipping entire check-in steps.
Title		Checkout validation bypass
Weaknesses		CWE-20
References		https://pretix.eu/about/en/blog/20260929-release-2026-7-1/
Metrics		cvssV4_0 `{'score': 1.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U'}`

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: rami.io

Published: 2026-09-29T11:53:52.379Z

Updated: 2026-09-29T14:46:34.505Z

Reserved: 2026-09-28T11:48:56.320Z

Link: CVE-2026-101266

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-29T12:17:09.470

Modified: 2026-09-29T12:17:09.470

Link: CVE-2026-101266

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-20

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-101266", "assignerOrgId": "655498c3-6ec5-4f0b-aea6-853b334d05a6", "state": "PUBLISHED", "assignerShortName": "rami.io", "dateReserved": "2026-09-28T11:48:56.320Z", "datePublished": "2026-09-29T11:53:52.379Z", "dateUpdated": "2026-09-29T14:46:34.505Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "655498c3-6ec5-4f0b-aea6-853b334d05a6", "shortName": "rami.io", "dateUpdated": "2026-09-29T11:53:52.379Z"}, "title": "Checkout validation bypass", "datePublic": "2026-09-29T14:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-20", "description": "CWE-20 Improper input validation", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-153", "descriptions": [{"lang": "en", "value": "CAPEC-153 Input Data Manipulation"}]}], "affected": [{"vendor": "pretix", "product": "pretix", "collectionURL": "https://pypi.python.org", "packageName": "pretix", "repo": "https://github.com/pretix/pretix", "versions": [{"status": "affected", "version": "0.0", "lessThan": "2026.5.5", "versionType": "python"}, {"status": "affected", "version": "2026.6.0", "lessThan": "2026.6.2", "versionType": "python"}, {"status": "affected", "version": "2026.7.0", "lessThan": "2026.7.1", "versionType": "python"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A logic flaw in the checkout flow allows users to bypass validations performed during the check-in by skipping entire check-in steps.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A logic flaw in the checkout flow allows users to bypass validations performed during the check-in by skipping entire check-in steps."}]}], "references": [{"url": "https://pretix.eu/about/en/blog/20260929-release-2026-7-1/", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "LOW", "baseScore": 1.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U"}}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-29T14:46:26.134826Z", "id": "CVE-2026-101266", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-29T14:46:34.505Z"}}]}}

{"affected": [{"affectedData": [{"collectionURL": "https://pypi.python.org", "defaultStatus": "unaffected", "packageName": "pretix", "product": "pretix", "repo": "https://github.com/pretix/pretix", "vendor": "pretix", "versions": [{"lessThan": "2026.5.5", "status": "affected", "version": "0.0", "versionType": "python"}, {"lessThan": "2026.6.2", "status": "affected", "version": "2026.6.0", "versionType": "python"}, {"lessThan": "2026.7.1", "status": "affected", "version": "2026.7.0", "versionType": "python"}]}], "source": "655498c3-6ec5-4f0b-aea6-853b334d05a6"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A logic flaw in the checkout flow allows users to bypass validations performed during the check-in by skipping entire check-in steps."}], "id": "CVE-2026-101266", "lastModified": "2026-09-29T12:17:09.470", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 1.3, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "UNREPORTED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "655498c3-6ec5-4f0b-aea6-853b334d05a6", "type": "Secondary"}]}, "published": "2026-09-29T12:17:09.470", "references": [{"source": "655498c3-6ec5-4f0b-aea6-853b334d05a6", "url": "https://pretix.eu/about/en/blog/20260929-release-2026-7-1/"}], "sourceIdentifier": "655498c3-6ec5-4f0b-aea6-853b334d05a6", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "655498c3-6ec5-4f0b-aea6-853b334d05a6", "type": "Secondary"}]}