CVE-2026-53977
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk41th percentile - higher than 41% of all known CVEs
Summary
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.
Risk Assessment
The risk is complete unavailability of the service for all users, potentially disrupting development teams and causing financial losses. The attack requires no authentication, so it can be carried out by anyone with network access.
Recommendation
It is recommended to immediately update OpenChamber to a version that fixes this vulnerability. Additionally, if possible, restrict access to the /api/system/shutdown endpoint using a firewall or access control list.
Other vulnerabilities in OpenChamber
See all- CVE-2026-53976Critical
Path traversal vulnerability in OpenChamber 1.11.7 in file-serving endpoints /api/fs/read, /api/fs/stat, and /api/fs/raw, allowing unauthenticated remote attackers to read arbitrary files by supplying allowOutsideWorkspace=true and an absolute path, bypassing workspace boundary check.
- CVE-2026-53975Critical
Unauthenticated remote code execution vulnerability in OpenChamber 1.11.7, allowing remote attackers to execute arbitrary shell commands by sending crafted POST requests to /api/fs/exec, which passes commands verbatim to Node.js spawn() without validation.
Original NVD description (English source)
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.