CVE-2026-5600Network attack vector

Cross-event check-in disclosure via organizer-wide query

Published Apr 8, 2026 · Updated Apr 8, 2026

Information disclosure in pretix allows remote authenticated users to read other events’ check-in records through the REST API. The event-specific check-in history endpoint scopes its database query to the organizer instead of the requested event, returning sibling-event scan records. Exploitation requires API access to one event under a shared organizer; exposed data includes scan times, results, and ticket IDs but generally not directly identifying details.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in pretix allows remote authenticated users to read other events’ check-in records through the REST API. The event-specific check-in history endpoint scopes its database query to the organizer instead of the requested event, returning sibling-event scan records. Exploitation requires API access to one event under a shared organizer; exposed data includes scan times, results, and ticket IDs but generally not directly identifying details.

The record

CVE
CVE-2026-5600
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
pretix GmbH
Product
pretix
Classifications
CWE-653, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2025.10.0 <2026.1.2
  2. Affected versionversion=2026.2.0 <2026.2.1
  3. Affected versionversion=2026.3.0 <2026.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

pretix GmbH · pretixversion=2025.10.0 <2026.1.2; version=2026.2.0 <2026.2.1; version=2026.3.0 <2026.3.1

Published CVSS scores

5.5GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-653Improper Isolation or Compartmentalization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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