CVE-2026-33533: Glances is an open-source system cross-platform monitoring tool

Q: How do I fix CVE-2026-33533?

glances: upgrade to 4.5.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-33533 being exploited?

CVE-2026-33533 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33533 affect?

CVE-2026-33533 affects glances. Severity is medium (CVSS 6.5). Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.3, the Glances XML-RPC server (activated with glances -s or glances --server) sends Access-Control-Allow-Origin: * on every HTTP response. Because the XML

Q: How urgent is CVE-2026-33533?

Priority 34/100. Public exploit reference

Routine

MEDIUM 6.5UPGRADE

CVE-2026-33533 is a medium-severity flaw (CVSS 6.5) affecting glances. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.3, the Glances XML-RPC server (activated with glances -s or glances --server) sends Access-Control-Allow-Origin: * on every HTTP response. Because the XML-RPC handler does not validate the Content-Type header, an attacker-controlled webpage can issue a CORS "simple request" (POST with Content-Type: text/plain) containing a valid XML-RPC payload. The browser send

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 74%)
CISA exploited list	No
Weakness	CWE-942
Published	2026-04-02
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: nicolargo

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 15:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

nicolargo glances UPGRADE

Affected: < 4.5.3

Fixed in: 4.5.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy glances || rpm -q glances || glances --version

2. UPGRADE to 4.5.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade glances

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade glances

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33533?

glances: upgrade to 4.5.3. Exact commands for each OS are on this page.

Is CVE-2026-33533 being exploited?

CVE-2026-33533 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33533 affect?

CVE-2026-33533 affects glances. Severity is medium (CVSS 6.5). Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.3, the Glances XML-RPC server (activated with glances -s or glances --server) sends Access-Control-Allow-Origin: * on every HTTP response. Because the XML

How urgent is CVE-2026-33533?

Priority 34/100. Public exploit reference

Related CVEs

CVE-2026-33641 HIGH 7.8 UPGRADE Glances is an open-source system cross-platform monitoring tool
CVE-2026-35587 HIGH 8.8 UPGRADE Glances is an open-source system cross-platform monitoring tool
CVE-2026-35588 MEDIUM 6.3 UPGRADE Glances is an open-source system cross-platform monitoring tool
CVE-2026-34839 MEDIUM 6.5 UPGRADE Glances is an open-source system cross-platform monitoring tool

References

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