9.1

CVE-2026-35482

Exploit

alf.io has an Authenticated RCE via Extension Script Sandbox Escape

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Alf ≫ Alf Version < 2.0-M5-2606
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.205
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.1 2.3 6
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
security-advisories@github.com 8 1.3 6
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE-863 Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

https://github.com/alfio-event/alf.io/security/advisories/GHSA-3w8f-mcf6-cm7h
Vendor Advisory
Exploit