CVE-2026-46611

MEDIUM

5.3

CVSS v3

Description

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.

CWE-346 CWE-350

How to fix

Remediation Available

glancesDebian

Fixed in:4.5.5+dfsg-1CVE-2026-46611

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

Red Hat vendor guidance

The XML-RPC server is a legacy interface started via the -s or --server flags. To maintain remote monitoring functionality securely, operators should migrate to the actively maintained REST API by starting Glances with the -w or --webserver flag instead. The REST API component is protected against DNS rebinding attacks.

Source: Red Hat

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploit Intelligence

0.17%probability of exploitation in 30 days

6thpercentile

Low risk: more likely to be exploited than 6% of all known CVEs.

References

Other references2

Related Vulnerabilities

Other CWE-346 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-34291	High	8.8	84%	KEV	-
CVE-2009-1185	High	7.2	82%	-	Fix
CVE-2015-4495	High	8.8	71%	KEV	Fix
CVE-2020-16952	High	8.6	71%	-	-
CVE-2023-29711	Critical	9.8	70%	-	-
CVE-2024-23898	High	8.8	67%	-	Fix

Common questions

How do I fix CVE-2026-46611?

Upgrade glances on debian unstable to 4.5.5+dfsg-1 or later.

Is CVE-2026-46611 being actively exploited?

Not that we know of. CVE-2026-46611 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.17% is the estimated probability that it will be exploited in the next 30 days. That is higher than 6% of all scored CVEs.

How severe is CVE-2026-46611?

CVE-2026-46611 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-46611 affect?

Published advisories record a fix for glances (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-26.