CVE-2026-53977 Details
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.
A vulnerability in OpenChamber version 1.11.7 allows unauthenticated remote attackers to bypass authentication and terminate the server process. This is achieved by sending a POST request to the /api/system/shutdown endpoint, which is registered before the authentication middleware in the Express route handler chain. The vulnerability exploits the route registration order in bootstrap-runtime.js, allowing attackers to access the shutdown handler before authentication is applied. This exploitation causes a denial-of-service condition for all active AI coding sessions, locking out legitimate remote users regardless of their UI_PASSWORD configuration.
Users can update to OpenChamber version 1.11.8 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 6, 2026CISA-ADP
Assessed Aug 6, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/openchamber/openchamber | [email protected] | ProductSource CodeVendor |
| https://github.com/openchamber/openchamber/commit/f1b9506132faf6c564a2694c7f33b94421a49b4a | [email protected] | Source CodeVendor |
| https://www.vulncheck.com/advisories/openchamber-unauthenticated-dos-via-api-system-shutdown | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-306 | Missing Authentication for Critical Function | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OpenChamber | <= 1.11.7 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 6, 2026 | CVE Modified | CISA-ADP |
| Aug 6, 2026 | New CVE Received | [email protected] |