GHSA-87qc-fj39-wccr: glances (CVE-2026-46608)

Package	Ecosystem	Affected	Fixed in
glances	PyPI	<4.5.5	4.5.5

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Glances XML-RPC server (glances -s) in versions before 4.5.5 always sends Access-Control-Allow-Origin as a wildcard when cors_origins lists more than one origin, so an explicit allowlist does not restrict browser access. An attacker who can get a victim's browser to visit a malicious web page can send a cross-origin request and read the system monitoring data, including process command lines. Upgrade to Glances 4.5.5 or later, which fixes the issue.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.4	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0040, the 34th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:42 UTC First seen by agentprime
31 Oct 2026, 14:42 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.