Unrated

UBUNTU-CVE-2026-88018

Type: withdrawalSource: OSV1 source record

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.1, rclone serve s3 configured with --auth-proxy but without --auth-key allows authPairMiddleware to register any client-chosen accessKeyID with an empty ws.s3Secret. gofakes3 then verifies the request’s SigV4 signature against that same empty secret, while Server.auth passes the access key identifier as both the user and authentication value to the proxy without an independent per-identity secret. An unauthenticated network attacker can therefore choose an arbitrary access key, sign with an empty secret, and reach whatever backend the auth-proxy script resolves for that identity. This issue is fixed in version 1.75.1.

Announced 10 Sept 2026Group revision 1

Original source ↗

UBUNTU-CVE-2026-88018

Primary source · Revision 1 · Withdrawn

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:UBUNTU-CVE-2026-88018

rclone

Source reference: /affected/0/package/name

Affected versions: 1.36-3
Source reference: /affected/0/versions
1.36-3ubuntu0.1
Source reference: /affected/0/versions
1.36-3ubuntu0.2
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

rclone

Source reference: /affected/1/package/name

Affected versions: 1.47.0+ex1-6
Source reference: /affected/1/versions
1.47.0+ex1-7
Source reference: /affected/1/versions
1.49.5-2
Source reference: /affected/1/versions
1.49.5-3
Source reference: /affected/1/versions
1.50.2-2
Source reference: /affected/1/versions
1.50.2-2ubuntu0.1
Source reference: /affected/1/versions
1.50.2-2ubuntu0.2
Source reference: /affected/1/versions
1.50.2-2ubuntu0.2+esm1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

rclone

Source reference: /affected/2/package/name

Affected versions: 1.53.3-1
Source reference: /affected/2/versions
1.53.3-2
Source reference: /affected/2/versions
1.53.3-4
Source reference: /affected/2/versions
1.53.3-4ubuntu1
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.1
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.2
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.3
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.3+esm1
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.4
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.4+esm1
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.5
Source reference: /affected/2/versions
1.53.3-4ubuntu1.22.04.5+esm1
Source reference: /affected/2/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

rclone

Source reference: /affected/3/package/name

Affected versions: 1.60.1+dfsg-2build1
Source reference: /affected/3/versions
1.60.1+dfsg-3
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.1
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.2
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.3
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.4
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.4+esm1
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.5
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.5+esm1
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.6
Source reference: /affected/3/versions
1.60.1+dfsg-3ubuntu0.24.04.6+esm1
Source reference: /affected/3/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

rclone

Source reference: /affected/4/package/name

Affected versions: 1.60.1+dfsg-4ubuntu2
Source reference: /affected/4/versions
1.60.1+dfsg-4ubuntu3
Source reference: /affected/4/versions
1.60.1+dfsg-4ubuntu3.1
Source reference: /affected/4/versions
1.60.1+dfsg-4ubuntu3.1+esm1
Source reference: /affected/4/versions
1.60.1+dfsg-4ubuntu3.2
Source reference: /affected/4/versions
1.60.1+dfsg-4ubuntu3.2+esm1
Source reference: /affected/4/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "rclone",
      "purl": "pkg:deb/ubuntu/rclone?arch=source&distro=bionic",
      "ecosystem": "Ubuntu:18.04:LTS"
    },
    "versions": [
      "1.36-3",
      "1.36-3ubuntu0.1",
      "1.36-3ubuntu0.2"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88018.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "golang-github-ncw-rclone-dev",
          "binary_version": "1.36-3ubuntu0.2"
        },
        {
          "binary_name": "rclone",
          "binary_version": "1.36-3ubuntu0.2"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "rclone",
      "purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Ffocal",
      "ecosystem": "Ubuntu:Pro:20.04:LTS"
    },
    "versions": [
      "1.47.0+ex1-6",
      "1.47.0+ex1-7",
      "1.49.5-2",
      "1.49.5-3",
      "1.50.2-2",
      "1.50.2-2ubuntu0.1",
      "1.50.2-2ubuntu0.2",
      "1.50.2-2ubuntu0.2+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88018.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "golang-github-rclone-rclone-dev",
          "binary_version": "1.50.2-2ubuntu0.2+esm1"
        },
        {
          "binary_name": "rclone",
          "binary_version": "1.50.2-2ubuntu0.2+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "rclone",
      "purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fjammy",
      "ecosystem": "Ubuntu:Pro:22.04:LTS"
    },
    "versions": [
      "1.53.3-1",
      "1.53.3-2",
      "1.53.3-4",
      "1.53.3-4ubuntu1",
      "1.53.3-4ubuntu1.22.04.1",
      "1.53.3-4ubuntu1.22.04.2",
      "1.53.3-4ubuntu1.22.04.3",
      "1.53.3-4ubuntu1.22.04.3+esm1",
      "1.53.3-4ubuntu1.22.04.4",
      "1.53.3-4ubuntu1.22.04.4+esm1",
      "1.53.3-4ubuntu1.22.04.5",
      "1.53.3-4ubuntu1.22.04.5+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88018.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "golang-github-rclone-rclone-dev",
          "binary_version": "1.53.3-4ubuntu1.22.04.5+esm1"
        },
        {
          "binary_name": "rclone",
          "binary_version": "1.53.3-4ubuntu1.22.04.5+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "rclone",
      "purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fnoble",
      "ecosystem": "Ubuntu:Pro:24.04:LTS"
    },
    "versions": [
      "1.60.1+dfsg-2build1",
      "1.60.1+dfsg-3",
      "1.60.1+dfsg-3ubuntu0.24.04.1",
      "1.60.1+dfsg-3ubuntu0.24.04.2",
      "1.60.1+dfsg-3ubuntu0.24.04.3",
      "1.60.1+dfsg-3ubuntu0.24.04.4",
      "1.60.1+dfsg-3ubuntu0.24.04.4+esm1",
      "1.60.1+dfsg-3ubuntu0.24.04.5",
      "1.60.1+dfsg-3ubuntu0.24.04.5+esm1",
      "1.60.1+dfsg-3ubuntu0.24.04.6",
      "1.60.1+dfsg-3ubuntu0.24.04.6+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88018.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "golang-github-rclone-rclone-dev",
          "binary_version": "1.60.1+dfsg-3ubuntu0.24.04.6+esm1"
        },
        {
          "binary_name": "rclone",
          "binary_version": "1.60.1+dfsg-3ubuntu0.24.04.6+esm1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "rclone",
      "purl": "pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fresolute",
      "ecosystem": "Ubuntu:Pro:26.04:LTS"
    },
    "versions": [
      "1.60.1+dfsg-4ubuntu2",
      "1.60.1+dfsg-4ubuntu3",
      "1.60.1+dfsg-4ubuntu3.1",
      "1.60.1+dfsg-4ubuntu3.1+esm1",
      "1.60.1+dfsg-4ubuntu3.2",
      "1.60.1+dfsg-4ubuntu3.2+esm1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-88018.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "golang-github-rclone-rclone-dev",
          "binary_version": "1.60.1+dfsg-4ubuntu3.2+esm1"
        },
        {
          "binary_name": "rclone",
          "binary_version": "1.60.1+dfsg-4ubuntu3.2+esm1"
        }
      ]
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #13774 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 00:29:59 GMT
Publisher date: Thu, 10 Sep 2026 16:18:00 GMT

Read the original announcement

Revision history

25 Oct 2026UBUNTU-CVE-2026-88018 · Revision 1Withdrawn