CVE-2026-53976
CriticalCVSS 9.1Exploitation Probability (EPSS)
High risk79th percentile - higher than 79% of all known CVEs
Summary
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.
Risk Assessment
An attacker can read sensitive files such as JWT signing secret, SSH private keys, API credentials, and environment variables, enabling full authentication bypass by forging session cookies.
Recommendation
Update OpenChamber to a patched version or apply a workaround such as restricting access to these endpoints.
Other vulnerabilities in OpenChamber
See all- 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.
- CVE-2026-53977High
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.
Original NVD description (English source)
OpenChamber 1.11.7 contains a path traversal vulnerability in the file-serving endpoints /api/fs/read, /api/fs/stat, and /api/fs/raw that allows unauthenticated remote attackers to read arbitrary files by supplying the allowOutsideWorkspace=true query parameter alongside an absolute path, bypassing the workspace boundary check in resolveReadPathFromContext. Attackers can exploit the vacuous isPathWithinRoot guard to read sensitive files such as the JWT signing secret, SSH private keys, API credentials, and environment variables, enabling full authentication bypass by forging session cookies on password-protected deployments.