Vulnerability in Nicolargo Glances
CVE-2026-32610
Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.2, the Glances REST API web server ships with a default CORS configuration that sets `allow_origins=["*"]` combined with `allow_credentials=True`. When both of these options are enabled together, Starlette's `CORSMiddleware` reflects the requesting `Origin` header value in the `Access-Control-Allow-Origin` response header instead of returning the literal `*` wildcard. This effectively grants any website the ability to make credentialed cross-origin API requests to the Glances server, enabling cross-site data theft of system monitoring information, configuration secrets, and command line arguments from any user who has an active browser session with a Glances instance. Version 4.5.2 fixes the issue.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.001
Affected products
- Nicolargo Glances — versions < 4.5.2
Weakness classification (CWE)
References
- github.com/nicolargo/glances/security/advisories/GHSA-9jfm-9rc6-2hfq (Exploit, Mitigation, Vendor Advisory)
- github.com/nicolargo/glances/commit/4465169b71d93991f1e49740fe02428291099832 (Patch)
- github.com/nicolargo/glances/releases/tag/v4.5.2 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-32610?
- CVE-2026-32610 is a high-severity vulnerability in Nicolargo Glances, classified under Permissive Cross-domain Policy with Untrusted Domains. CVSS score: 8.1/10. Published 2026-03-18.
- How severe is CVE-2026-32610?
- High severity. CVSS v3 base score is 8.1 out of 10.