CVE-2026-53977
OpenChamber 1.11.7 Unauthenticated DoS via /api/system/shutdown
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.
INFO
Published Date :
Aug. 6, 2026, 4:16 p.m.
Last Modified :
Oct. 24, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-53977
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update OpenChamber to the latest version.
- Apply vendor-provided security patches.
- Review route registration order in Express handlers.
- Ensure authentication middleware runs before sensitive endpoints.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53977.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53977 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53977
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53977 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53977 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: OpenChamber de Bohdan Triapitsyn, Description: OpenChamber 1.11.7 contiene una vulnerabilidad de omisión de autenticación que permite a atacantes remotos no autenticados terminar el proceso del servidor enviando una solicitud POST al endpoint /api/system/shutdown, el cual está registrado antes del middleware de autenticación en la cadena de gestores de ruta de Express. Los atacantes pueden explotar el orden de registro de rutas en bootstrap-runtime.js para alcanzar el gestor de apagado antes de que se ejecute el middleware de autenticación, causando denegación de servicio a todas las sesiones de codificación de IA activas y bloqueando a usuarios remotos legítimos independientemente de si UI_PASSWORD está configurado. Title: OpenChamber de Bohdan Triapitsyn, Description: OpenChamber 1.11.7 contiene una vulnerabilidad de omisión de autenticación que permite a atacantes remotos no autenticados terminar el proceso del servidor enviando una solicitud POST al endpoint /api/system/shutdown, el cual está registrado antes del middleware de autenticación en la cadena de gestores de ruta de Express. Los atacantes pueden explotar el orden de registro de rutas en bootstrap-runtime.js para alcanzar el gestor de apagado antes de que se ejecute el middleware de autenticación, causando denegación de servicio a todas las sesiones de codificación de IA activas y bloqueando a usuarios remotos legítimos independientemente de si UI_PASSWORD está configurado. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: OpenChamber de Bohdan Triapitsyn, Description: OpenChamber 1.11.7 contiene una vulnerabilidad de omisión de autenticación que permite a atacantes remotos no autenticados terminar el proceso del servidor enviando una solicitud POST al endpoint /api/system/shutdown, el cual está registrado antes del middleware de autenticación en la cadena de gestores de ruta de Express. Los atacantes pueden explotar el orden de registro de rutas en bootstrap-runtime.js para alcanzar el gestor de apagado antes de que se ejecute el middleware de autenticación, causando denegación de servicio a todas las sesiones de codificación de IA activas y bloqueando a usuarios remotos legítimos independientemente de si UI_PASSWORD está configurado. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 06, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-53977', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-06T17:53:11.180390Z'} -
New CVE Received by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Bohdan Triapitsyn', 'product': 'OpenChamber', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '1.11.7'}], 'defaultStatus': 'affected'}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-306 Added Reference https://github.com/openchamber/openchamber Added Reference https://github.com/openchamber/openchamber/commit/f1b9506132faf6c564a2694c7f33b94421a49b4a Added Reference https://www.vulncheck.com/advisories/openchamber-unauthenticated-dos-via-api-system-shutdown