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Glances: REST API CORS Credentials Guard Uses Exact-Match Instead of Membership Test — Bypassed by Any Multi-Origin Allowlist Containing the Wildcard

Type: advisorySources: OSV

Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.6, the cors_origins guard in glances/outputs/glances_restful_api.py uses exact list equality instead of wildcard membership, allowing a multi-origin list containing the wildcard to retain cors_credentials and expose authenticated REST API data to an untrusted website visited by a previously authenticated user. This issue is fixed in 4.5.6.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-68517
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 06:22 UTC · Revision 1

Source evidence

Glances: REST API CORS Credentials Guard Uses Exact-Match Instead of Membership Test — Bypassed by Any Multi-Origin Allowlist Containing the Wildcard

core-osv · Original source

Published 17 Aug 2026, 17:03 UTC

Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.6, the cors_origins guard in glances/outputs/glances_restful_api.py uses exact list equality instead of wildcard membership, allowing a multi-origin list containing the wildcard to retain cors_credentials and expose authenticated REST API data to an untrusted website visited by a previously authenticated user. This issue is fixed in 4.5.6.

osv:CVE-2026-68517
Complete source record
{
  "id": "78b96222886a6a7396a88c1668500b3c06f7f59d223ff2bc288995caa54171a5",
  "url": "https://osv.dev/vulnerability/CVE-2026-68517",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Glances: REST API CORS Credentials Guard Uses Exact-Match Instead of Membership Test — Bypassed by Any Multi-Origin Allowlist Containing the Wildcard",
    "summary": "Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.6, the cors_origins guard in glances/outputs/glances_restful_api.py uses exact list equality instead of wildcard membership, allowing a multi-origin list containing the wildcard to retain cors_credentials and expose authenticated REST API data to an untrusted website visited by a previously authenticated user. This issue is fixed in 4.5.6.",
    "evidence": "osv:CVE-2026-68517",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-68517",
      "aliases": [
        "CVE-2026-68517",
        "GHSA-fp27-88fp-2phg",
        "PYSEC-2026-3667"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nicolargo/glances",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ce2f8506289c71e48ed8bf186f2c04d8256203d5"
                },
                {
                  "fixed": "890858944ab9d03730ec6b1ba42d4015e6d85db5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.5.6"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "890858944ab9d03730ec6b1ba42d4015e6d85db5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "ce2f8506289c71e48ed8bf186f2c04d8256203d5"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v4.5.6"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.5.5",
            "v4.5.4",
            "v4.5.3",
            "v4.5.2",
            "v4.5.1",
            "v4.5.0.5",
            "v4.5.0.4",
            "v4.5.0.3",
            "v4.5.0.2",
            "v4.5.0.1",
            "v4.5.0",
            "v4.4.1",
            "v4.4.0",
            "v4.3.3",
            "v4.3.2",
            "v4.3.1",
            "v4.3.0.8",
            "v4.3.0.7",
            "v4.3.0.6",
            "v4.3.0.3",
            "v4.3.0.2",
            "v4.3.0.1",
            "v4.3.0",
            "v4.2.0",
            "v3.4.0",
            "v3.3.1",
            "v3.3.0.1",
            "v3.3.0",
            "v3.2.7",
            "v3.2.6",
            "v3.2.5",
            "v3.2.4.2",
            "v3.2.4.1",
            "v3.2.4",
            "v3.2.3.1",
            "v3.2.3",
            "v3.2.2",
            "v3.2.1",
            "v3.2.0",
            "v3.1.7",
            "v3.1.6.1",
            "v3.1.5",
            "v3.1.4",
            "v3.1.3",
            "v3.1.2",
            "v3.1.1",
            "v3.1.0",
            "v3.0",
            "v2.11",
            "v2.10",
            "v2.9.1",
            "v2.9.0",
            "v2.8.8",
            "v2.8.7",
            "v2.8.6",
            "v2.8.5",
            "v2.8.4",
            "v2.8.3",
            "v2.8.2",
            "v2.8.1",
            "v2.8",
            "v2.7.1",
            "v2.7",
            "v2.7_RC1",
            "v2.5.1",
            "v2.5",
            "v2.4.2",
            "v2.4.1",
            "v2.3",
            "v2.2",
            "v1.7.3",
            "v1.7.2",
            "v1.7.1",
            "v1.7",
            "v1.6.1",
            "v1.6",
            "v1.5.2",
            "v1.5.1",
            "v1.5",
            "v1.4.2.1",
            "v1.4.2",
            "v1.4.1.1",
            "v1.4.1",
            "v1.4",
            "v1.3.7",
            "v1.3.6",
            "v1.3.5",
            "v1.3.4",
            "v1.3.3",
            "v1.3.2",
            "v1.3.1",
            "v1.3",
            "v1.2",
            "v1.1.3",
            "v1.1.2",
            "v1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68517.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.810968251Z",
      "provider": "osv",
      "references": [
        "https://github.com/nicolargo/glances/releases/tag/v4.5.6",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68517.json",
        "https://github.com/nicolargo/glances/security/advisories/GHSA-fp27-88fp-2phg",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-68517",
        "https://github.com/nicolargo/glances/commit/890858944ab9d03730ec6b1ba42d4015e6d85db5"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-942"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68517.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-68517",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518484,
  "published_at": "2026-08-17T17:03:23.346+00:00"
}