FKIE_CVE-2026-32632

Vulnerability from fkie_nvd - Published: 2026-03-18 18:16 - Updated: 2026-03-19 19:06
Severity ?
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
Summary
Glances is an open-source system cross-platform monitoring tool. Glances recently added DNS rebinding protection for the MCP endpoint, but prior to version 4.5.2, the main REST/WebUI FastAPI application still accepts arbitrary `Host` headers and does not apply `TrustedHostMiddleware` or an equivalent host allowlist. As a result, the REST API, WebUI, and token endpoint remain reachable through attacker-controlled domains in classic DNS rebinding scenarios. Once the victim browser has rebound the attacker domain to the Glances service, same-origin policy no longer protects the API because the browser considers the rebinding domain to be the origin. This is a distinct issue from the previously reported default CORS weakness. CORS is not required for exploitation here because DNS rebinding causes the victim browser to treat the malicious domain as same-origin with the rebinding target. Version 4.5.2 contains a patch for the issue.
References
security-advisories@github.comhttps://github.com/nicolargo/glances/commit/5850c564ee10804fdf884823b9c210eb954dd1f9Patch
security-advisories@github.comhttps://github.com/nicolargo/glances/releases/tag/v4.5.2Release Notes
security-advisories@github.comhttps://github.com/nicolargo/glances/security/advisories/GHSA-hhcg-r27j-fhv9Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/nicolargo/glances/security/advisories/GHSA-hhcg-r27j-fhv9Exploit, Vendor Advisory
Impacted products
Vendor Product Version
nicolargo glances *
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  "descriptions": [
    {
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      "value": "Glances is an open-source system cross-platform monitoring tool. Glances recently added DNS rebinding protection for the MCP endpoint, but prior to version 4.5.2, the main REST/WebUI FastAPI application still accepts arbitrary `Host` headers and does not apply `TrustedHostMiddleware` or an equivalent host allowlist. As a result, the REST API, WebUI, and token endpoint remain reachable through attacker-controlled domains in classic DNS rebinding scenarios. Once the victim browser has rebound the attacker domain to the Glances service, same-origin policy no longer protects the API because the browser considers the rebinding domain to be the origin. This is a distinct issue from the previously reported default CORS weakness. CORS is not required for exploitation here because DNS rebinding causes the victim browser to treat the malicious domain as same-origin with the rebinding target. Version 4.5.2 contains a patch for the issue."
    }
  ],
  "id": "CVE-2026-32632",
  "lastModified": "2026-03-19T19:06:36.183",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.9,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "CWE-346"
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      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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