Vulnerability-Lookup

GHSA-CVWP-R2G2-J824

Vulnerability from github – Published: 2026-03-16 16:26 – Updated: 2026-03-19 21:06

Summary

Glances has Incomplete Secrets Redaction: /api/v4/args Endpoint Leaks Password Hash and SNMP Credentials

Details

Summary

The GHSA-gh4x fix (commit 5d3de60) addressed unauthenticated configuration secrets exposure on the /api/v4/config endpoints by introducing as_dict_secure() redaction. However, the /api/v4/args and /api/v4/args/{item} endpoints were not addressed by this fix. These endpoints return the complete command-line arguments namespace via vars(self.args), which includes the password hash (salt + pbkdf2_hmac), SNMP community strings, SNMP authentication keys, and the configuration file path. When Glances runs without --password (the default), these endpoints are accessible without any authentication.

Details

The secrets exposure fix (GHSA-gh4x, commit 5d3de60) modified three config-related endpoints to use as_dict_secure() when no password is configured:

# glances/outputs/glances_restful_api.py:1168 (FIXED)
args_json = self.config.as_dict() if self.args.password else self.config.as_dict_secure()

However, the _api_args and _api_args_item endpoints were not part of this fix and still return all arguments without any sanitization:

# glances/outputs/glances_restful_api.py:1222-1237
def _api_args(self):
    try:
        # Get the RAW value of the args dict
        # Use vars to convert namespace to dict
        args_json = vars(self.args)
    except Exception as e:
        raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get args ({str(e)})")

    return GlancesJSONResponse(args_json)

And the item-specific endpoint:

# glances/outputs/glances_restful_api.py:1239-1258
def _api_args_item(self, item: str):
    ...
    args_json = vars(self.args)[item]
    return GlancesJSONResponse(args_json)

The self.args namespace contains sensitive fields set during initialization in glances/main.py:

password (line 806-819): When --password is used, this contains the salt + pbkdf2_hmac hash. An attacker can use this for offline brute-force attacks.
snmp_community (line 445): Default "public", but may be set to a secret community string for SNMP monitoring.
snmp_user (line 448): SNMP v3 username, default "private".
snmp_auth (line 450): SNMP v3 authentication key, default "password" but typically set to a secret value.
conf_file (line 198): Path to the configuration file, reveals filesystem structure.
username (line 430/800): The Glances authentication username.

Both endpoints are registered on the authenticated router (line 504-505):

f'{base_path}/args': self._api_args,
f'{base_path}/args/{{item}}': self._api_args_item,

When --password is not set (the default), the router has NO authentication dependency (line 479-480), making these endpoints completely unauthenticated:

if self.args.password:
    router = APIRouter(prefix=self.url_prefix, dependencies=[Depends(self.authentication)])
else:
    router = APIRouter(prefix=self.url_prefix)

PoC

Scenario 1: No password configured (default deployment)

# Start Glances in web server mode (default, no password)
glances -w

# Access all command line arguments without authentication
curl -s http://localhost:61208/api/4/args | python -m json.tool

# Expected output includes sensitive fields:
# "password": "",
# "snmp_community": "public",
# "snmp_user": "private",
# "snmp_auth": "password",
# "username": "glances",
# "conf_file": "/home/user/.config/glances/glances.conf",

# Access specific sensitive argument
curl -s http://localhost:61208/api/4/args/snmp_community
curl -s http://localhost:61208/api/4/args/snmp_auth

Scenario 2: Password configured (authenticated deployment)

# Start Glances with password authentication
glances -w --password --username admin

# Authenticate and access args (password hash exposed to authenticated users)
curl -s -u admin:mypassword http://localhost:61208/api/4/args/password
# Returns the salt$pbkdf2_hmac hash which enables offline brute-force

Impact

Unauthenticated network reconnaissance: When Glances runs without --password (the common default for internal/trusted networks), anyone who can reach the web server can enumerate SNMP credentials, usernames, file paths, and all runtime configuration.
Offline password cracking: When authentication is enabled, an authenticated user can retrieve the password hash (salt + pbkdf2_hmac) and perform offline brute-force attacks. The hash uses pbkdf2_hmac with SHA-256 and 100,000 iterations (see glances/password.py:45), which provides some protection but is still crackable with modern hardware.
Lateral movement: Exposed SNMP community strings and v3 authentication keys can be used to access other network devices monitored by the Glances instance.
Supply chain for CORS attack: Combined with the default CORS misconfiguration (finding 001), these secrets can be stolen cross-origin by a malicious website.

Recommended Fix

Apply the same redaction pattern used for the /api/v4/config endpoints:

# glances/outputs/glances_restful_api.py

_SENSITIVE_ARGS = frozenset({
    'password', 'snmp_community', 'snmp_user', 'snmp_auth',
    'conf_file', 'password_prompt', 'username_used',
})

def _api_args(self):
    try:
        args_json = vars(self.args).copy()
        if not self.args.password:
            for key in _SENSITIVE_ARGS:
                if key in args_json:
                    args_json[key] = "********"
        # Never expose the password hash, even to authenticated users
        if 'password' in args_json and args_json['password']:
            args_json['password'] = "********"
    except Exception as e:
        raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get args ({str(e)})")
    return GlancesJSONResponse(args_json)

def _api_args_item(self, item: str):
    if item not in self.args:
        raise HTTPException(status.HTTP_400_BAD_REQUEST, f"Unknown argument item {item}")
    try:
        if item in _SENSITIVE_ARGS:
            if not self.args.password:
                return GlancesJSONResponse("********")
            if item == 'password':
                return GlancesJSONResponse("********")
        args_json = vars(self.args)[item]
    except Exception as e:
        raise HTTPException(status.HTTP_404_NOT_FOUND, f"Cannot get args item ({str(e)})")
    return GlancesJSONResponse(args_json)

Severity ?

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "Glances"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-32609"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-16T16:26:54Z",
    "nvd_published_at": "2026-03-18T15:16:30Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n\nThe GHSA-gh4x fix (commit 5d3de60) addressed unauthenticated configuration secrets exposure on the `/api/v4/config` endpoints by introducing `as_dict_secure()` redaction. However, the `/api/v4/args` and `/api/v4/args/{item}` endpoints were not addressed by this fix. These endpoints return the complete command-line arguments namespace via `vars(self.args)`, which includes the password hash (salt + pbkdf2_hmac), SNMP community strings, SNMP authentication keys, and the configuration file path. When Glances runs without `--password` (the default), these endpoints are accessible without any authentication.\n\n## Details\n\nThe secrets exposure fix (GHSA-gh4x, commit 5d3de60) modified three config-related endpoints to use `as_dict_secure()` when no password is configured:\n\n```python\n# glances/outputs/glances_restful_api.py:1168 (FIXED)\nargs_json = self.config.as_dict() if self.args.password else self.config.as_dict_secure()\n```\n\nHowever, the `_api_args` and `_api_args_item` endpoints were not part of this fix and still return all arguments without any sanitization:\n\n```python\n# glances/outputs/glances_restful_api.py:1222-1237\ndef _api_args(self):\n    try:\n        # Get the RAW value of the args dict\n        # Use vars to convert namespace to dict\n        args_json = vars(self.args)\n    except Exception as e:\n        raise HTTPException(status.HTTP_404_NOT_FOUND, f\"Cannot get args ({str(e)})\")\n\n    return GlancesJSONResponse(args_json)\n```\n\nAnd the item-specific endpoint:\n\n```python\n# glances/outputs/glances_restful_api.py:1239-1258\ndef _api_args_item(self, item: str):\n    ...\n    args_json = vars(self.args)[item]\n    return GlancesJSONResponse(args_json)\n```\n\nThe `self.args` namespace contains sensitive fields set during initialization in `glances/main.py`:\n\n1. **`password`** (line 806-819): When `--password` is used, this contains the salt + pbkdf2_hmac hash. An attacker can use this for offline brute-force attacks.\n\n2. **`snmp_community`** (line 445): Default `\"public\"`, but may be set to a secret community string for SNMP monitoring.\n\n3. **`snmp_user`** (line 448): SNMP v3 username, default `\"private\"`.\n\n4. **`snmp_auth`** (line 450): SNMP v3 authentication key, default `\"password\"` but typically set to a secret value.\n\n5. **`conf_file`** (line 198): Path to the configuration file, reveals filesystem structure.\n\n6. **`username`** (line 430/800): The Glances authentication username.\n\nBoth endpoints are registered on the authenticated router (line 504-505):\n```python\nf\u0027{base_path}/args\u0027: self._api_args,\nf\u0027{base_path}/args/{{item}}\u0027: self._api_args_item,\n```\n\nWhen `--password` is not set (the default), the router has NO authentication dependency (line 479-480), making these endpoints completely unauthenticated:\n```python\nif self.args.password:\n    router = APIRouter(prefix=self.url_prefix, dependencies=[Depends(self.authentication)])\nelse:\n    router = APIRouter(prefix=self.url_prefix)\n```\n\n## PoC\n\n**Scenario 1: No password configured (default deployment)**\n\n```bash\n# Start Glances in web server mode (default, no password)\nglances -w\n\n# Access all command line arguments without authentication\ncurl -s http://localhost:61208/api/4/args | python -m json.tool\n\n# Expected output includes sensitive fields:\n# \"password\": \"\",\n# \"snmp_community\": \"public\",\n# \"snmp_user\": \"private\",\n# \"snmp_auth\": \"password\",\n# \"username\": \"glances\",\n# \"conf_file\": \"/home/user/.config/glances/glances.conf\",\n\n# Access specific sensitive argument\ncurl -s http://localhost:61208/api/4/args/snmp_community\ncurl -s http://localhost:61208/api/4/args/snmp_auth\n```\n\n**Scenario 2: Password configured (authenticated deployment)**\n\n```bash\n# Start Glances with password authentication\nglances -w --password --username admin\n\n# Authenticate and access args (password hash exposed to authenticated users)\ncurl -s -u admin:mypassword http://localhost:61208/api/4/args/password\n# Returns the salt$pbkdf2_hmac hash which enables offline brute-force\n```\n\n## Impact\n\n- **Unauthenticated network reconnaissance:** When Glances runs without `--password` (the common default for internal/trusted networks), anyone who can reach the web server can enumerate SNMP credentials, usernames, file paths, and all runtime configuration.\n\n- **Offline password cracking:** When authentication is enabled, an authenticated user can retrieve the password hash (salt + pbkdf2_hmac) and perform offline brute-force attacks. The hash uses pbkdf2_hmac with SHA-256 and 100,000 iterations (see `glances/password.py:45`), which provides some protection but is still crackable with modern hardware.\n\n- **Lateral movement:** Exposed SNMP community strings and v3 authentication keys can be used to access other network devices monitored by the Glances instance.\n\n- **Supply chain for CORS attack:** Combined with the default CORS misconfiguration (finding 001), these secrets can be stolen cross-origin by a malicious website.\n\n## Recommended Fix\n\nApply the same redaction pattern used for the `/api/v4/config` endpoints:\n\n```python\n# glances/outputs/glances_restful_api.py\n\n_SENSITIVE_ARGS = frozenset({\n    \u0027password\u0027, \u0027snmp_community\u0027, \u0027snmp_user\u0027, \u0027snmp_auth\u0027,\n    \u0027conf_file\u0027, \u0027password_prompt\u0027, \u0027username_used\u0027,\n})\n\ndef _api_args(self):\n    try:\n        args_json = vars(self.args).copy()\n        if not self.args.password:\n            for key in _SENSITIVE_ARGS:\n                if key in args_json:\n                    args_json[key] = \"********\"\n        # Never expose the password hash, even to authenticated users\n        if \u0027password\u0027 in args_json and args_json[\u0027password\u0027]:\n            args_json[\u0027password\u0027] = \"********\"\n    except Exception as e:\n        raise HTTPException(status.HTTP_404_NOT_FOUND, f\"Cannot get args ({str(e)})\")\n    return GlancesJSONResponse(args_json)\n\ndef _api_args_item(self, item: str):\n    if item not in self.args:\n        raise HTTPException(status.HTTP_400_BAD_REQUEST, f\"Unknown argument item {item}\")\n    try:\n        if item in _SENSITIVE_ARGS:\n            if not self.args.password:\n                return GlancesJSONResponse(\"********\")\n            if item == \u0027password\u0027:\n                return GlancesJSONResponse(\"********\")\n        args_json = vars(self.args)[item]\n    except Exception as e:\n        raise HTTPException(status.HTTP_404_NOT_FOUND, f\"Cannot get args item ({str(e)})\")\n    return GlancesJSONResponse(args_json)\n```",
  "id": "GHSA-cvwp-r2g2-j824",
  "modified": "2026-03-19T21:06:22Z",
  "published": "2026-03-16T16:26:54Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nicolargo/glances/security/advisories/GHSA-cvwp-r2g2-j824"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32609"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nicolargo/glances/commit/ff14eb9780ee10ec018c754754b1c8c7bfb6c44f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nicolargo/glances"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nicolargo/glances/releases/tag/v4.5.2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Glances has Incomplete Secrets Redaction: /api/v4/args Endpoint Leaks Password Hash and SNMP Credentials"
}

CVE-2026-32609 (GCVE-0-2026-32609)

Vulnerability from cvelistv5 – Published: 2026-03-18 14:30 – Updated: 2026-03-18 14:46

Title

Glances has Incomplete Secrets Redaction: /api/v4/args Endpoint Leaks Password Hash and SNMP Credentials

Summary

Glances is an open-source system cross-platform monitoring tool. The GHSA-gh4x fix (commit 5d3de60) addressed unauthenticated configuration secrets exposure on the `/api/v4/config` endpoints by introducing `as_dict_secure()` redaction. However, the `/api/v4/args` and `/api/v4/args/{item}` endpoints were not addressed by this fix. These endpoints return the complete command-line arguments namespace via `vars(self.args)`, which includes the password hash (salt + pbkdf2_hmac), SNMP community strings, SNMP authentication keys, and the configuration file path. When Glances runs without `--password` (the default), these endpoints are accessible without any authentication. Version 4.5.2 provides a more complete fix.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

GitHub_M

References

URL

Tags

	https://github.com/nicolargo/glances/security/adv…	x_refsource_CONFIRM
	https://github.com/nicolargo/glances/commit/ff14e…	x_refsource_MISC
	https://github.com/nicolargo/glances/releases/tag…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	nicolargo	glances	Affected: < 4.5.2

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-32609",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-18T14:45:48.212375Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-18T14:46:18.186Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "glances",
          "vendor": "nicolargo",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.5.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Glances is an open-source system cross-platform monitoring tool. The GHSA-gh4x fix (commit 5d3de60) addressed unauthenticated configuration secrets exposure on the `/api/v4/config` endpoints by introducing `as_dict_secure()` redaction. However, the `/api/v4/args` and `/api/v4/args/{item}` endpoints were not addressed by this fix. These endpoints return the complete command-line arguments namespace via `vars(self.args)`, which includes the password hash (salt + pbkdf2_hmac), SNMP community strings, SNMP authentication keys, and the configuration file path. When Glances runs without `--password` (the default), these endpoints are accessible without any authentication. Version 4.5.2 provides a more complete fix."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-18T14:30:37.786Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nicolargo/glances/security/advisories/GHSA-cvwp-r2g2-j824",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nicolargo/glances/security/advisories/GHSA-cvwp-r2g2-j824"
        },
        {
          "name": "https://github.com/nicolargo/glances/commit/ff14eb9780ee10ec018c754754b1c8c7bfb6c44f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nicolargo/glances/commit/ff14eb9780ee10ec018c754754b1c8c7bfb6c44f"
        },
        {
          "name": "https://github.com/nicolargo/glances/releases/tag/v4.5.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nicolargo/glances/releases/tag/v4.5.2"
        }
      ],
      "source": {
        "advisory": "GHSA-cvwp-r2g2-j824",
        "discovery": "UNKNOWN"
      },
      "title": "Glances has Incomplete Secrets Redaction: /api/v4/args Endpoint Leaks Password Hash and SNMP Credentials"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-32609",
    "datePublished": "2026-03-18T14:30:37.786Z",
    "dateReserved": "2026-03-12T14:54:24.270Z",
    "dateUpdated": "2026-03-18T14:46:18.186Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-CVWP-R2G2-J824

Summary

Details

PoC

Impact

Recommended Fix

CVE-2026-32609 (GCVE-0-2026-32609)

Tags

Sightings

Nomenclature