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CVE-2026-53977— OpenChamber 1.11.7 Unauthenticated DoS via /api/system/shutdown

Quick assessment

Affected
Bohdan Triapitsyn OpenChamber
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.

OpenChamber是OpenChamber组织的一个跨桌面端、浏览器、移动端和VS Code运行、监督及审查AI编程智能体工作的开发环境。 OpenChamber 1.11.7及之前版本存在授权问题漏洞，该漏洞源于认证绕过，未认证的远程攻击者可通过向/api/system/shutdown端点发送POST请求，利用bootstrap-runtime.js中的路由注册顺序在认证中间件执行前触发关闭处理器，导致拒绝服务。

CVSS 7.5 · High EPSS 0.97% · P61

Affected Version Matrix 1

VendorProduct Version RangeStatus
Bohdan Triapitsyn OpenChamber ≤ 1.11.7 affected
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I. Basic Information for CVE-2026-53977

Vulnerability Information
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Vulnerability Title
OpenChamber 1.11.7 Unauthenticated DoS via /api/system/shutdown
Source: CVE Program / CVE List V5
Vulnerability Description
OpenChamber 1.11.7 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to terminate the server process by sending a POST request to the /api/system/shutdown endpoint, which is registered before the authentication middleware in the Express route handler chain. Attackers can exploit the route registration order in bootstrap-runtime.js to reach the shutdown handler before auth middleware executes, causing denial of service to all active AI coding sessions and locking out legitimate remote users regardless of whether UI_PASSWORD is configured.
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
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
OpenChamber 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenChamber是OpenChamber组织的一个跨桌面端、浏览器、移动端和VS Code运行、监督及审查AI编程智能体工作的开发环境。 OpenChamber 1.11.7及之前版本存在授权问题漏洞，该漏洞源于认证绕过，未认证的远程攻击者可通过向/api/system/shutdown端点发送POST请求，利用bootstrap-runtime.js中的路由注册顺序在认证中间件执行前触发关闭处理器，导致拒绝服务。
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
Bohdan Triapitsyn OpenChamber 0 ~ 1.11.7 -

II. Public POCs for CVE-2026-53977

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7527 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
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III. Intelligence Information for CVE-2026-53977

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Vendor Advisories for CVE-2026-53977 (1)

Other References for CVE-2026-53977 (1)

Same Patch Batch · Bohdan Triapitsyn · 2026-08-06 · 3 CVEs total

CVE-2026-53975 9.8 CRITICAL OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec
CVE-2026-53976 9.1 CRITICAL OpenChamber 1.11.7 Path Traversal File Read via allowOutsideWorkspace Parameter

IV. Related Vulnerabilities

Same product: OpenChamber
Same vendor: Bohdan Triapitsyn
Same weakness: CWE-306

V. Comments for CVE-2026-53977

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