Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-35482— alf.io has an Authenticated RCE via Extension Script Sandbox Escape

Quick assessment

Affected
alfio-event alf.io
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Alf.io是Alf.io开源的一款免费开源活动出席管理系统。 Alf.io 2.0-M5-2606之前版本存在安全漏洞，该漏洞源于扩展脚本引擎中的沙箱逃逸，结合未保护的注入Java对象returnClass和不完整的AST黑名单，可能导致经过身份验证的管理员执行任意操作系统命令。

CVSS 8.0 · High EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1068.001

Affected Version Matrix 1

VendorProduct Version RangeStatus
alfio-event alf.io < 2.0-M5-2606 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-35482

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
alf.io has an Authenticated RCE via Extension Script Sandbox Escape
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Alf.io 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Alf.io是Alf.io开源的一款免费开源活动出席管理系统。 Alf.io 2.0-M5-2606之前版本存在安全漏洞，该漏洞源于扩展脚本引擎中的沙箱逃逸，结合未保护的注入Java对象returnClass和不完整的AST黑名单，可能导致经过身份验证的管理员执行任意操作系统命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
alfio-event alf.io < 2.0-M5-2606 -

II. Public POCs for CVE-2026-35482

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6651 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-35482

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-35482 (1)

IV. Related Vulnerabilities

Same product: alf.io
Same vendor: alfio-event
Same weakness: CWE-863

V. Comments for CVE-2026-35482

No comments yet

Leave a comment