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CVE-2026-107839— ageLANServer: Unbounded JSON Array Allocation in AoE3 Cloud `getFileURL` Endpoint Leads to Remote Denial of Service

Quick assessment

Affected
luskaner ageLANServer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ageLANServer 是一款跨平台的 Web 服务器和启动器，用于支持多款《帝国时代》（Age of Empires）和《神话时代》（Age of Mythology）游戏的离线多人联机模式。在版本 1.15.2 之前，其内置游戏服务器中处理 AoE3 POST /game/cloud/getFileURL 请求的处理器存在安全漏洞：该处理器未对请求体的大小进行限制，也未对攻击者可控的 JSON 名称数组长度设置上限，而是直接根据该无界数组的长度分配响应存储空间。远程未认证客户端可以利用默认的自助注册流程，发送

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
luskaner ageLANServer < 1.15.2 affected
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I. Basic Information for CVE-2026-107839

Vulnerability Information
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Vulnerability Title
ageLANServer: Unbounded JSON Array Allocation in AoE3 Cloud `getFileURL` Endpoint Leads to Remote Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
ageLANServer provides a cross-platform web server and launcher for offline multiplayer in several Age of Empires and Age of Mythology games. Prior to version 1.15.2, the AoE3 POST /game/cloud/getFileURL handler in the bundled game server has no request body size limit or cap on the attacker-controlled JSON names array and allocates response storage directly from the unbounded array length. A remote unauthenticated client can use the default self-registration flow and send an oversized request that causes excessive memory allocation, crashes or hangs the server process, disconnects active players, and keeps the service unavailable until it is restarted. This issue is fixed in version 1.15.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
luskaner ageLANServer < 1.15.2 -

II. Public POCs for CVE-2026-107839

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III. Intelligence Information for CVE-2026-107839

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Other References for CVE-2026-107839 (3)

IV. Related Vulnerabilities

Same weakness: CWE-400

V. Comments for CVE-2026-107839

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