CVE-2026-68517
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.6, the cors_origins guard in glances/outputs/glances_restful_api.py uses exact list equality instead of wildcard membership, allowing a multi-origin list containing the wildcard to retain cors_credentials and expose authenticated REST API data to an untrusted website visited by a previously authenticated user. This issue is fixed in 4.5.6.
Risk Assessment
Authenticated monitoring data can be exposed to untrusted websites, potentially leading to leakage of sensitive infrastructure information of the organization.
Recommendation
It is recommended to upgrade Glances to version 4.5.6 or later to fix the CORS configuration issue.
Other vulnerabilities in Glances
See all- CVE-2026-68520Medium
Glances before 4.5.6 has a vulnerability in as_dict_secure() in glances/config.py that checks only option names and exposes public_username and credentials embedded in public_api values through unauthenticated GET /api/4/config and GET /api/4/config/ip requests.
- CVE-2026-68519High
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.6, GlancesActions.run() in glances/actions.py ignores --disable-config-exec for on-alert action commands and invokes secure_popen() with shell operators enabled, allowing configured redirection, command chaining, or pipes to execute when an alert triggers. This issue is fixed in 4.5.6.
- CVE-2026-62982High
Glances is an open-source system cross-platform monitoring tool. From 4.5.2 until 4.5.6, _sanitize_mustache_dict() in glances/actions.py skips nested list and dictionary strings such as process cmdline values, allowing pipe characters to survive chevron.render() and be executed by secure_popen() through administrator-configured action templates. This issue is fixed in 4.5.6.
- CVE-2026-68518High
Glances before version 4.5.6 has a vulnerability in _sanitize_mustache_dict() in glances/actions.py that sanitizes individual Mustache values before chevron.render(), allowing adjacent unescaped Mustache variables to reconstruct shell operators that secure_popen() executes when attacker-controlled process or container fields are rendered by an administrator-configured action template. This issue is fixed in 4.5.6.
- CVE-2026-53925High
Glances is a system monitoring tool that, from versions 4.0.8 to 4.5.5, has a vulnerability in the secure_popen() function. This function interprets redirection, pipe, and command chaining operators without validation, allowing unauthorized actions on the system.
- CVE-2026-46607High
Glances is a system monitoring tool that prior to version 4.5.5 used pickle.load() to read a version-check cache file. The lack of integrity checks and format validation before deserialization allows an attacker with access to this file to plant a malicious pickle file, leading to arbitrary code execution.
Original NVD description (English source)
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.6, the cors_origins guard in glances/outputs/glances_restful_api.py uses exact list equality instead of wildcard membership, allowing a multi-origin list containing the wildcard to retain cors_credentials and expose authenticated REST API data to an untrusted website visited by a previously authenticated user. This issue is fixed in 4.5.6.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

