Detections
Analytics
SCA: security update for Glances (GHSA-gfc2-9qmw-w7vh)
high Tenable Cloud Security Plugin ID 440709
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, the Glances web
server exposes a REST API (`/api/4/*`) that is accessible without authentication and allows cross-origin
requests from any origin due to a permissive CORS policy (`Access-Control-Allow-Origin: *`). This allows a
malicious website to read sensitive system information from a running Glances instance in the victim’s
browser, leading to cross-origin data exfiltration. While a previous advisory exists for XML-RPC CORS
issues, this report demonstrates that the REST API (`/api/4/*`) is also affected and exposes significantly
more sensitive data. Version 4.5.4 patches the issue. (CVE-2026-34839)
Solution
Update the Glances library and its related packages to version 4.5.4 or later.See Also
Plugin Details
Severity: High
ID: 440709
Version: Revision 1.11
Type: Local
Family: SCA Checks
Published: 4/21/2026
Updated: 6/30/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.73
Vendor
Vendor Severity: High
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2026-34839
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.9
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 8.7
Threat Score: 8.7
Threat Vector: CVSS:4.0/E:P
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 4/21/2026
Vulnerability Publication Date: 4/20/2026
Reference Information
CVE: CVE-2026-34839