CVEvulnerability

CVE-2026-35482

9.1 CRITICAL Published 2026-06-02 Modified 2026-08-12 Official page ↗
Status
Analyzed
Published
2026-06-02
Last modified
2026-08-12
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.0 HIGH — CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 3.1 ([email protected])
9.1 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-863

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.

Affected configurations

• alf alf (< 2.0-M5-2606)

Related

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References