Vulnerability-Lookup

CVE-2026-5600 (GCVE-0-2026-5600)

Vulnerability from cvelistv5 – Published: 2026-04-08 12:24 – Updated: 2026-04-08 16:03

Summary

A new API endpoint introduced in pretix 2025 that is supposed to return all check-in events of a specific event in fact returns all check-in events belonging to the respective organizer. This allows an API consumer to access information for all other events under the same organizer, even those they should not have access to. These records contain information on the time and result of every ticket scan as well as the ID of the matched ticket. Example: { "id": 123, "successful": true, "error_reason": null, "error_explanation": null, "position": 321, "datetime": "2020-08-23T09:00:00+02:00", "list": 456, "created": "2020-08-23T09:00:00+02:00", "auto_checked_in": false, "gate": null, "device": 1, "device_id": 1, "type": "entry" } An unauthorized user usually has no way to match these IDs (position) back to individual people.

Severity ?

5.5 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H

CWE

CWE-653 - Improper isolation or compartmentalization

Assigner

rami.io

References

URL

Tags

https://pretix.eu/about/en/blog/20260408-release-…

Impacted products

	Vendor	Product	Version
	pretix	pretix	Affected: 2025.10.0 , < 2026.1.2 (python) Affected: 2026.2.0 , < 2026.2.1 (python) Affected: 2026.3.0 , < 2026.3.1 (python)

Credits

Pratik Karan

Show details on NVD website

JSON

To clipboard

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GHSA-WR8Q-C73G-M7GP

Vulnerability from github – Published: 2026-04-08 15:31 – Updated: 2026-04-08 19:23

Summary

pretix: API leaks check-in data between events of the same organizer

Details

These records contain information on the time and result of every ticket scan as well as the ID of the matched ticket. Example:

{ "id": 123, "successful": true, "error_reason": null, "error_explanation": null, "position": 321, "datetime": "2020-08-23T09:00:00+02:00", "list": 456, "created": "2020-08-23T09:00:00+02:00", "auto_checked_in": false, "gate": null, "device": 1, "device_id": 1, "type": "entry" }

An unauthorized user usually has no way to match these IDs (position) back to individual people.

Severity ?

5.5 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pretix"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2026.3.0"
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            },
            {
              "fixed": "2026.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-5600"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-653"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-08T19:23:39Z",
    "nvd_published_at": "2026-04-08T13:16:43Z",
    "severity": "MODERATE"
  },
  "details": "A new API endpoint introduced in pretix 2025 that is supposed to return all check-in events of a specific event in fact returns all check-in events belonging to the respective organizer. This allows an API consumer to access information for all other events under the same organizer, even those they should not have access to.\n\nThese records contain information on the time and result of every ticket scan as well as the ID of the matched ticket. Example:\n\n{\n  \"id\": 123,\n  \"successful\": true,\n  \"error_reason\": null,\n  \"error_explanation\": null,\n  \"position\": 321,\n  \"datetime\": \"2020-08-23T09:00:00+02:00\",\n  \"list\": 456,\n  \"created\": \"2020-08-23T09:00:00+02:00\",\n  \"auto_checked_in\": false,\n  \"gate\": null,\n  \"device\": 1,\n  \"device_id\": 1,\n  \"type\": \"entry\"\n}\n\nAn unauthorized user usually has no way to match these IDs (position) back to individual people.",
  "id": "GHSA-wr8q-c73g-m7gp",
  "modified": "2026-04-08T19:23:39Z",
  "published": "2026-04-08T15:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5600"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pretix/pretix"
    },
    {
      "type": "WEB",
      "url": "https://pretix.eu/about/en/blog/20260408-release-2026-3-1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pretix: API leaks check-in data between events of the same organizer"
}

FKIE_CVE-2026-5600

Vulnerability from fkie_nvd - Published: 2026-04-08 13:16 - Updated: 2026-04-08 21:26

Severity ?

5.5 (Medium) - CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H

Summary

References

	URL	Tags
	655498c3-6ec5-4f0b-aea6-853b334d05a6	https://pretix.eu/about/en/blog/20260408-release-2026-3-1/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "cveTags": [],
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      "lang": "en",
      "value": "A new API endpoint introduced in pretix 2025 that is supposed to \nreturn all check-in events of a specific event in fact returns all \ncheck-in events belonging to the respective organizer. This allows an \nAPI consumer to access information for all other events under the same \norganizer, even those they should not have access to.\n\n\nThese records contain information on the time and result of every ticket scan as well as the ID of the matched ticket. Example:\n\n\n{\n  \"id\": 123,\n  \"successful\": true,\n  \"error_reason\": null,\n  \"error_explanation\": null,\n  \"position\": 321,\n  \"datetime\": \"2020-08-23T09:00:00+02:00\",\n  \"list\": 456,\n  \"created\": \"2020-08-23T09:00:00+02:00\",\n  \"auto_checked_in\": false,\n  \"gate\": null,\n  \"device\": 1,\n  \"device_id\": 1,\n  \"type\": \"entry\"\n}\n\n\n\nAn unauthorized user usually has no way to match these IDs (position) back to individual people."
    }
  ],
  "id": "CVE-2026-5600",
  "lastModified": "2026-04-08T21:26:13.410",
  "metrics": {
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      {
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
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          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "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": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/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": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "655498c3-6ec5-4f0b-aea6-853b334d05a6",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-08T13:16:43.543",
  "references": [
    {
      "source": "655498c3-6ec5-4f0b-aea6-853b334d05a6",
      "url": "https://pretix.eu/about/en/blog/20260408-release-2026-3-1/"
    }
  ],
  "sourceIdentifier": "655498c3-6ec5-4f0b-aea6-853b334d05a6",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-653"
        }
      ],
      "source": "655498c3-6ec5-4f0b-aea6-853b334d05a6",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-5600 (GCVE-0-2026-5600)

GHSA-WR8Q-C73G-M7GP

FKIE_CVE-2026-5600

Tags

Sightings

Nomenclature