VULNERABILITY INTELLIGENCE

CVE-2026-35482

CVSS score8 HIGH
EPSS probability0.28%
CISA KEVNot currently listed
Published2026-06-02
Last modified2026-08-12
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Description

alf.io is an open source ticket reservation system for conferences, trade shows, workshops, and meetups. Prior to version 2.0-M5-2606, a sandbox escape vulnerability in the alf.io extension script engine allows an authenticated administrator to execute arbitrary operating system commands on the server. The extension system is intended to execute restricted JavaScript in a sandboxed Rhino environment; however, a combination of an unguarded injected Java object (`returnClass`) and an incomplete AST blocklist allows the sandbox to be fully escaped using Java reflection without triggering any validation errors. Version 2.0-M5-2606 patches the issue.

Weakness classification

  • CWE-863: Incorrect Authorization

Primary references