Bohdan Triapitsyn OpenChamber up to 1.11.7 Command Execution /api/fs/exec spawn os command injection

Summaryinfo

A vulnerability has been found in Bohdan Triapitsyn OpenChamber up to 1.11.7 and classified as critical. This issue affects the function spawn of the file /api/fs/exec of the component Command Execution. This manipulation causes os command injection. The identification of this vulnerability is CVE-2026-53975. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in Bohdan Triapitsyn OpenChamber up to 1.11.7 and classified as critical. Affected by this vulnerability is the function spawn of the file /api/fs/exec of the component Command Execution. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

OpenChamber 1.11.7 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by sending crafted POST requests to the /api/fs/exec endpoint, which passes commands verbatim to Node.js spawn() without any allowlist, blocklist, or argument validation. The authentication middleware becomes a no-op when UI_PASSWORD is not configured, matching the default Docker deployment, enabling attackers to execute arbitrary OS commands as the application user and retrieve full command output including stdout, stderr, and exit code from the server response.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-53975 since 06/11/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/06/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Bohdan Triapitsyn

Name

• OpenChamber

Version

• 1.11.0
• 1.11.1
• 1.11.2
• 1.11.3
• 1.11.4
• 1.11.5
• 1.11.6
• 1.11.7

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