CVE-2026-46611CWE-346CWE-350

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

Medium · published June 25, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
5.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00166 · 5.6th percentile
Weaknesses
CWE-346 · Origin Validation Error; CWE-350 · Reliance on Reverse DNS Resolution for a Security-Critical Action
Published
2026-06-25T18:00Z
EPSS history
Timeline
  • 25 JUN 18:00Z
    Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack
    cvelistv5