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TI-2026-38937 Aliases CVE-2026-53977GHSA-hw79-7vhm-4hc6

OpenChamber 1.11.7 Unauthenticated DoS via /api/system/shutdown

Priority MEDIUM 46CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00967 62nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Bohdan TriapitsynOpenChamberup to 1.11.7—No fix listedCNA
  • OpenChamber VendorBohdan Triapitsyn Affected up to 1.11.7 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-53977
  2. 2026-10-03 Alias added: GHSA-hw79-7vhm-4hc6

References

Patch 1

Other 1

  • TI-2026-38936 OpenChamber 1.11.7 Path Traversal File Read via allowOutsideWorkspace Parameter CVSS 4.0CRITICAL 9.3
  • TI-2026-38935 OpenChamber 1.11.7 Unauthenticated RCE via /api/fs/exec CVSS 4.0CRITICAL 9.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences