Vulnerability · Published Aug 6, 2026 · Assigned by VulnCheck
CVE-2026-53977OpenChamber 1.11.7 Unauthenticated DoS via /api/system/shutdown
High 7.5
In plain English
A high-severity missing authentication in OpenChamber from Bohdan Triapitsyn. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities).
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Bohdan Triapitsyn | OpenChamber | 0 – through 1.11.7 |
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- Product Advisory product
- Patch Commit patch
- https://www.vulncheck.com/advisories/openchamber-unauthenticated-dos-via-api-system-shutdown third-party-advisory