---
id: CVE-2026-50165
title: >-
  alf.io has Improper Access Control for Organization Owners that Exposes System
  Secrets
summary: >-
  alf.io is an open source ticket reservation system for conferences, trade
  shows, workshops, and meetups. An Improper Access Control issue in versions
  prior to 2.0-M5-2605 allows an organization owner to read system-level
  configuration se…
severity: high
cvss: 7.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-284
vendor: alfio-event
product: alf.io
affected:
  - alf.io < 2.0-M5-2606
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T17:58:35.051357Z'
published: '2026-09-09'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T17:59:28.378Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-50165'
references:
  - url: >-
      https://github.com/alfio-event/alf.io/security/advisories/GHSA-x473-r8w6-fcq5
    label: >-
      https://github.com/alfio-event/alf.io/security/advisories/GHSA-x473-r8w6-fcq5
tags:
  - cve.org
epss: 0.00207
epssPercentile: 0.11129
ingestedAt: '2026-09-11T14:42:19.863Z'
---

## Overview

alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. An Improper Access Control issue in versions prior to 2.0-M5-2605 allows an organization owner to read system-level configuration secrets through organization/event scoped "single configuration" endpoints. The affected endpoints require organization or event ownership, but they accept an arbitrary configuration key and then return the first matching value from a lookup that includes system-level configuration. As a result, an organization owner can retrieve secrets intended to be administrator-only, including the system API key when it is configured. Version 2.0-M5-2605 fixes the issue.

## Affected

- `alf.io < 2.0-M5-2606`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.