CVE-2026-53975
OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec
- State
- Published
- Severity
- 9.3 Critical
- Published
- Aug 6, 2026
- Updated
- Aug 6, 2026
- Reserved
- Jun 11, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Affected Products
| Product | Versions |
|---|---|
OpenChamberBohdan Triapitsyn |
|
References
- Product Advisoryproduct
- Patch Commitpatch
- https://www.vulncheck.com/advisories/openchamber-unauthenticated-rce-via-api-fs-execthird-party-advisory
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