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TI-2026-34269 Aliases CVE-2026-46611GHSA-w856-8p3r-p338

Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack

Priority MEDIUM 57CWE-346Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · 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. Prior to 4.5.5, the Glances XML-RPC server (glances -s, implemented in glances/server.py) does not validate the HTTP Host header, leaving it vulnerable to DNS rebinding attacks. An attacker can exploit DNS rebinding to exfiltrate the full system monitoring dataset from a victim's browser. This vulnerability is fixed in 4.5.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00145 3rd percentileScored 2026-11-07
Fix Fixed glances (nicolargo): 4.5.5glances (PyPI): 4.5.5

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 4.5.54.5.5Patch availableCNA
—glances (PyPI)before 4.5.54.5.5Patch availableGHSA-w856-8p3r-p338
  • glances Vendornicolargo Affected before 4.5.5 Fixed in 4.5.5 Patch available CNA
  • glances (PyPI) Vendor— Affected before 4.5.5 Fixed in 4.5.5 Patch available GHSA-w856-8p3r-p338

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:nicolargo:glances:*:*:*:*:*:*:*:*——nicolargo
  • cpe:2.3:a:nicolargo:glances:*:*:*:*:*:*:*:* Versions — — ·nicolargo

Remediation

  • Fix · CNA glances (nicolargo) Fixed in 4.5.5
  • Fix · GHSA-w856-8p3r-p338 glances (PyPI) Fixed in 4.5.5 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-2026-46611
  2. 2026-10-03 Alias added: GHSA-w856-8p3r-p338

References

Advisory 2

Other 5

  • 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-2026-48284 Glances: Command injection bypass of action-template sanitizer via cross-field shell-operator reconstruction CVSS 4.0HIGH 8.8
  • TI-2026-44988 OS command injection in nicolargo glances CVSS 3.1HIGH 8.8
  • 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
See all 24 →

Sources

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