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TI-2026-25141 Aliases CVE-2026-32632GHSA-hhcg-r27j-fhv9

Glances's REST/WebUI Lacks Host Validation and Remains Exposed to DNS Rebinding

Priority MEDIUM 60CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-346.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00196 9th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed glances (nicolargo): 4.5.2Glances (PyPI): 4.5.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
nicolargoglancesbefore 4.5.24.5.2Patch availableCNA
—Glances (PyPI)before 4.5.24.5.2Patch availableGHSA-hhcg-r27j-fhv9
  • glances Vendornicolargo Affected before 4.5.2 Fixed in 4.5.2 Patch available CNA
  • Glances (PyPI) Vendor— Affected before 4.5.2 Fixed in 4.5.2 Patch available GHSA-hhcg-r27j-fhv9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nicolargo:glances:*:*:*:*:*:*:*:*before 4.5.2Vulnerablenicolargo
  • cpe:2.3:a:nicolargo:glances:*:*:*:*:*:*:*:* Versions before 4.5.2 Vulnerable ·nicolargo

Remediation

  • Fix · CNA glances (nicolargo) Fixed in 4.5.2
  • Fix · GHSA-hhcg-r27j-fhv9 Glances (PyPI) Fixed in 4.5.2 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-32632
  2. 2026-10-03 Alias added: GHSA-hhcg-r27j-fhv9

References

Exploit 1

Patch 1

Advisory 1

Other 2

  • TI-2026-25142 Glances's Browser API Exposes Reusable Downstream Credentials via `/api/4/serverslist` CVSS 3.1CRITICAL 9.1
  • TI-2026-25106 Glances exposes the REST API without authentication CVSS 4.0HIGH 8.7
  • TI-2026-27083 Glances Vulnerable to Cross-Origin Information Disclosure via Unauthenticated REST API (/api/4) due to Permissive CORS CVSS 4.0HIGH 7.7
  • TI-2026-25120 Glances has a SQL Injection in DuckDB Export via Unparameterized DDL Statements CVSS 3.1CRITICAL 9.1
  • TI-2026-25118 Glances has Incomplete Secrets Redaction: /api/v4/args Endpoint Leaks Password Hash and SNMP Credentials CVSS 3.1HIGH 7.5
  • TI-2026-25143 Glances Central Browser Autodiscovery Leaks Reusable Credentials to Zeroconf-Spoofed Servers CVSS 3.1HIGH 8.1
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences