Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix

{
  "id": "a4abe16ccd3c767e108b731b0a5abd9e7265a12e884564723cfb7636eed706d9",
  "url": "https://osv.dev/vulnerability/CVE-2026-49980",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Rclone: Unauthenticated command execution in `rclone rcd --rc-serve` via inline remote instantiation, bypassing CVE-2026-41179 fix",
    "summary": "Rclone is a command-line program to sync files and directories to and from different cloud storage providers. From 1.46.0 until 1.74.3, rclone rcd --rc-serve accepts unauthenticated GET and HEAD requests to paths of the form: /[remote:path]/object. The remote value is parsed from the URL and passed to normal backend initialization. Inline remote configuration can set backend options that execute local commands during initialization. As a result, a single unauthenticated GET or HEAD request can execute a command as the rclone process user. This vulnerability is fixed in 1.74.3.",
    "evidence": "osv:CVE-2026-49980",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-49980",
      "aliases": [
        "BIT-rclone-2026-49980",
        "CVE-2026-49980",
        "GHSA-qw24-gh76-8rvv",
        "GO-2026-5596"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/rclone/rclone",
              "type": "GIT",
              "events": [
                {
                  "introduced": "eb85ecc9c480175bd39a2009212ffa81eaebee7c"
                },
                {
                  "fixed": "37e4117f48bdef0fa1ba27f6467d7a891b0b55ba"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.46.0"
                      },
                      {
                        "fixed": "1.74.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:rclone:rclone:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.46"
                      },
                      {
                        "fixed": "1.74.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.74.2",
            "v1.74.1",
            "v1.74.0",
            "v1.73.0",
            "v1.72.0",
            "v1.71.0",
            "v1.70.0",
            "v1.69.0",
            "v1.68.0",
            "v1.67.0",
            "v1.66.0",
            "v1.65.0",
            "v1.64.0",
            "v1.63.0",
            "v1.62.0",
            "v1.61.0",
            "v1.60.0",
            "v1.59.0",
            "v1.58.0",
            "v1.57.0",
            "v1.56.0",
            "v1.55.0",
            "v1.54.0",
            "v1.53.0",
            "v1.52.0",
            "v1.51.0",
            "v1.50.0",
            "v1.49.0",
            "v1.48.0",
            "v1.47.0",
            "v1.46.0",
            "v1.46"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49980.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.622085837Z",
      "provider": "osv",
      "references": [
        "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49980.json",
        "https://access.redhat.com/security/cve/CVE-2026-49980",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49980.json",
        "https://github.com/rclone/rclone/security/advisories/GHSA-qw24-gh76-8rvv",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-49980",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2492478"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-306"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49980.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-49980",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494319,
  "published_at": "2026-06-24T17:52:33.024+00:00"
}