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CVE-2026-53976— OpenChamber 1.11.7 Path Traversal File Read via allowOutsideWorkspace Parameter

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.

Bohdan Triapitsyn OpenChamber是Bohdan Triapitsyn的一款信息化产品。 OpenChamber 1.11.7及之前版本存在路径遍历漏洞，该漏洞源于文件服务端点/api/fs/read、/api/fs/stat和/api/fs/raw存在路径遍历问题，攻击者可通过提供allowOutsideWorkspace=true查询参数和绝对路径绕过工作区边界检查，导致未认证远程攻击者读取任意文件，包括JWT签名密钥、SSH私钥、API凭据和环境变量等敏感信息，从而伪造会话c

CVSS 9.1 · Critical EPSS 1.90% · P78

Public Exploits 1

Nuclei · 1 CVE-2026-53976.yaml [template]

Affected Version Matrix 1

VendorProduct Version RangeStatus
Bohdan Triapitsyn OpenChamber ≤ 1.11.7 affected
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I. Basic Information for CVE-2026-53976

Vulnerability Information
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Vulnerability Title
OpenChamber 1.11.7 Path Traversal File Read via allowOutsideWorkspace Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
OpenChamber 1.11.7 contains a path traversal vulnerability in the file-serving endpoints /api/fs/read, /api/fs/stat, and /api/fs/raw that allows unauthenticated remote attackers to read arbitrary files by supplying the allowOutsideWorkspace=true query parameter alongside an absolute path, bypassing the workspace boundary check in resolveReadPathFromContext. Attackers can exploit the vacuous isPathWithinRoot guard to read sensitive files such as the JWT signing secret, SSH private keys, API credentials, and environment variables, enabling full authentication bypass by forging session cookies on password-protected deployments.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenChamber 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bohdan Triapitsyn OpenChamber是Bohdan Triapitsyn的一款信息化产品。 OpenChamber 1.11.7及之前版本存在路径遍历漏洞，该漏洞源于文件服务端点/api/fs/read、/api/fs/stat和/api/fs/raw存在路径遍历问题，攻击者可通过提供allowOutsideWorkspace=true查询参数和绝对路径绕过工作区边界检查，导致未认证远程攻击者读取任意文件，包括JWT签名密钥、SSH私钥、API凭据和环境变量等敏感信息，从而伪造会话c
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-2026-53976

# POC Description Source Link Shenlong Link
1 OpenChamber 1.11.7 contains a path traversal vulnerability in the file-serving endpoints /api/fs/read, /api/fs/stat, and /api/fs/raw that allows unauthenticated remote attackers to read arbitrary files by supplying the allowOutsideWorkspace=true query parameter alongside an absolute path, bypassing the workspace boundary check in resolveReadPathFromContext. Attackers can exploit the vacuous isPathWithinRoot guard to read sensitive files such as the JWT signing secret, SSH private keys, API credentials, and environment variables, enabling full authentication bypass by forging session cookies on password-protected deployments. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-53976.yaml POC Details
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 10026 chars
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III. Intelligence Information for CVE-2026-53976

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Vendor Advisories for CVE-2026-53976 (1)

Other References for CVE-2026-53976 (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-2026-53977 7.5 HIGH OpenChamber 1.11.7 Unauthenticated DoS via /api/system/shutdown

IV. Related Vulnerabilities

Same product: OpenChamber
Same vendor: Bohdan Triapitsyn
Same weakness: CWE-22

V. Comments for CVE-2026-53976

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