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Vulnerability details

CVE-2026-50165

alfio-event alf.io

alf.io has Improper Access Control for Organization Owners that Exposes System Secrets

CVSS 4.0
7.1High

Official description

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.

CVSS scores

ScoreVersionSourceVector
7.1High 4.0 CVEProject cvelistV5 (CNA) (GitHub_M) 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

Affected products

VendorProductVersionsSource
alfio-event alf.io < 2.0-M5-2606 CVEProject cvelistV5 (CNA)

References and advisories

1
Kolun on Telegram @kolunsec Exploited CVEs, key news and a daily digest Alerts for this product's next CVEsFollow the product to get new vulnerabilities on Telegram.

Details

Published
2026-09-09
Last updated
2026-09-10
State
Published
Assigner (CNA)
GitHub_M

Exploit prediction (EPSS)

0.35%
Probability of exploitation in 30 days
28.8%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Partial

Weaknesses (CWE)

  • CWE-284
    Improper Access Control