CVE catalog

CVE-2026-33533

Glances is an open-source system cross-platform…

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 sends the request without a preflight check, the server processes the XML body and returns the full system monitoring dataset, and the wildcard CORS header lets the attacker's JavaScript read the response. The result is complete exfiltration of hostname, OS version, IP addresses, CPU/memory/disk/network stats, and the full process list including command lines (which often contain tokens, passwords, or internal paths). This issue has been patched in version 4.5.3.

Severity: High · CVSS 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Apr 2, 2026, 2:56:38 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.33% · Oct 27, 2026

Projects and upstream resources

[glances][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence

Original provider fields

{
  "package_releases": [
    {
      "name": "glances",
      "status": "fixed",
      "release": "sid",
      "version": "4.5.8+dfsg-1"
    },
    {
      "name": "glances",
      "status": "fixed",
      "release": "forky",
      "version": "4.5.8+dfsg-1"
    },
    {
      "name": "glances",
      "status": "vulnerable",
      "release": "trixie",
      "version": "4.3.1+dfsg-1"
    },
    {
      "name": "glances",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "3.3.1.1+dfsg-1"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1132603,
      "name": "glances",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "4.5.3.2+dfsg-1"
    },
    {
      "bug": 1132603,
      "name": "glances",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "4.5.3.2+dfsg-1"
    },
    {
      "bug": 1132603,
      "name": "glances",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1132603,
      "name": "glances",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "glances",
      "ecosystem": "cpe",
      "fixed_version": "not yet fixed"
    },
    {
      "name": "glances",
      "ecosystem": "cpe",
      "fixed_version": "4.5.3"
    },
    {
      "name": "glances",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.3"
            }
          ]
        }
      ],
      "ecosystem": "PyPI",
      "fixed_version": "4.5.3",
      "provider_record_id": "PYSEC-2026-2173"
    },
    {
      "name": "python-Glances",
      "distro": "opensuse",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.5.3-1.1"
            }
          ]
        }
      ],
      "release": "tumbleweed",
      "versions": [],
      "ecosystem": "rpm",
      "fixed_version": "4.5.3-1.1",
      "provider_record_id": "OPENSUSE-SU-2026:10519-1"
    },
    {
      "name": "glances",
      "ranges": [
        {
          "fixed": "4.5.3",
          "introduced": "",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "4.5.3",
      "provider_record_id": "NVD-CVE-2026-33533"
    }
  ]
}

[Debian bug #1132603]

Publisher notes

[trixie] glances: Minor issue [bookworm] glances: Minor issue

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[glances]Unknown
Details (2)
- 3.3.1.1+dfsg-1 · all · bookworm
  Affected
  nvd · glances · debian · bookworm; nvd · glances · debian · 12
- 3.3.1.1+dfsg-1 · all · bookworm
  Affected
  nvd · glances · debian · bookworm; nvd · glances · debian · 12
[glances-doc]Unknown
Source package: [glances]
Details (2)
- 3.3.1.1+dfsg-1 · all · bookworm
  Affected
  nvd · glances · debian · bookworm; nvd · glances · debian · 12
- 3.3.1.1+dfsg-1 · all · bookworm
  Affected
  nvd · glances · debian · bookworm; nvd · glances · debian · 12

[Debian 13 (Trixie)]

[glances]Unknown
Details (2)
- 4.3.1+dfsg-1 · all · trixie
  Affected
  nvd · glances · debian · 13
- 4.3.1+dfsg-1 · all · trixie
  Affected
  nvd · glances · debian · 13
[glances-doc]Unknown
Source package: [glances]
Details (2)
- 4.3.1+dfsg-1 · all · trixie
  Affected
  nvd · glances · debian · 13
- 4.3.1+dfsg-1 · all · trixie
  Affected
  nvd · glances · debian · 13

[openSUSE Tumbleweed]

[glances-common]Unknown
Source package: [python-Glances]
Details (1)
- 4.5.5-2.2 · noarch · tumbleweed
  Unknown · Fixed: 4.5.3-1.1
  Version impact unknown
  nvd · python-Glances · opensuse · tumbleweed
[python313-Glances]Unknown
Source package: [python-Glances]
Details (1)
- 4.5.5-2.2 · noarch · tumbleweed
  Unknown · Fixed: 4.5.3-1.1
  Version impact unknown
  nvd · python-Glances · opensuse · tumbleweed
[python314-Glances]Unknown
Source package: [python-Glances]
Details (1)
- 4.5.5-2.2 · noarch · tumbleweed
  Unknown · Fixed: 4.5.3-1.1
  Version impact unknown
  nvd · python-Glances · opensuse · tumbleweed

Observed: Oct 27, 2026, 10:28:16 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]