UBUNTU-CVE-2026-71310

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Source
https://ubuntu.com/security/CVE-2026-71310
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71310.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-71310
Upstream
Published
2026-08-06T00:00:00Z
Modified
2026-08-06T22:15:46.121515168Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

rclone is a command-line program to sync files and directories to and from different cloud storage providers. Prior to 1.75.0, the shared HTTP CONNECT helper in lib/proxy/http.go parses proxy CONNECT responses with http.ReadResponse over an unrestricted buffered reader, allowing a malicious or compromised configured proxy, or an active on-path actor controlling a plaintext HTTP proxy hop, to send oversized headers that grow memory until the rclone process fails. The affected helper is used by FTP and SFTP proxy connections, and SFTP reaches the parser before SSH server authentication, so target host key validation does not constrain a malicious proxy. This issue is fixed in 1.75.0.

References

Affected packages

Ubuntu:18.04:LTS / rclone

Package

Name
rclone
Purl
pkg:deb/ubuntu/rclone?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.36-3
1.36-3ubuntu0.1
1.36-3ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.36-3ubuntu0.2",
            "binary_name": "golang-github-ncw-rclone-dev"
        },
        {
            "binary_version": "1.36-3ubuntu0.2",
            "binary_name": "rclone"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71310.json"

Ubuntu:Pro:20.04:LTS / rclone

Package

Name
rclone
Purl
pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.50.2-2ubuntu0.2+esm1",
            "binary_name": "golang-github-rclone-rclone-dev"
        },
        {
            "binary_version": "1.50.2-2ubuntu0.2+esm1",
            "binary_name": "rclone"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71310.json"

Ubuntu:Pro:22.04:LTS / rclone

Package

Name
rclone
Purl
pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.53.3-4ubuntu1.22.04.5+esm1",
            "binary_name": "golang-github-rclone-rclone-dev"
        },
        {
            "binary_version": "1.53.3-4ubuntu1.22.04.5+esm1",
            "binary_name": "rclone"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71310.json"

Ubuntu:Pro:24.04:LTS / rclone

Package

Name
rclone
Purl
pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.60.1+dfsg-3ubuntu0.24.04.6+esm1",
            "binary_name": "golang-github-rclone-rclone-dev"
        },
        {
            "binary_version": "1.60.1+dfsg-3ubuntu0.24.04.6+esm1",
            "binary_name": "rclone"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71310.json"

Ubuntu:Pro:26.04:LTS / rclone

Package

Name
rclone
Purl
pkg:deb/ubuntu/rclone?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.60.1+dfsg-4ubuntu3.2+esm1",
            "binary_name": "golang-github-rclone-rclone-dev"
        },
        {
            "binary_version": "1.60.1+dfsg-4ubuntu3.2+esm1",
            "binary_name": "rclone"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71310.json"