UBUNTU-CVE-2026-30924

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Source
https://ubuntu.com/security/CVE-2026-30924
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-30924
Upstream
Published
2026-03-19T21:17:00Z
Modified
2026-05-20T16:24:55.862971229Z
Severity
  • 9.0 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:H CVSS Calculator
  • 9.6 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

qui is a web interface for managing qBittorrent instances. Versions 1.14.1 and below use a permissive CORS policy that reflects arbitrary origins while also returning Access-Control-Allow-Credentials: true, effectively allowing any external webpage to make authenticated requests on behalf of a logged-in user. An attacker can exploit this by tricking a victim into loading a malicious webpage, which silently interacts with the application using the victim's session and potentially exfiltrating sensitive data such as API keys and account credentials, or even achieving full system compromise through the built-in External Programs manager. Exploitation requires that the victim access the application via a non-localhost hostname and load an attacker-controlled webpage, making highly targeted social-engineering attacks the most likely real-world scenario. This issue was not fixed at the time of publication.

References

Affected packages

Ubuntu:16.04:LTS
qbittorrent

Package

Name
qbittorrent
Purl
pkg:deb/ubuntu/qbittorrent?arch=source&distro=xenial

Affected ranges

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

Affected versions

3.*
3.2.3-2
3.2.5-1
3.3.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qbittorrent",
            "binary_version": "3.3.1-1"
        },
        {
            "binary_name": "qbittorrent-nox",
            "binary_version": "3.3.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json"
Ubuntu:18.04:LTS
qbittorrent

Package

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

Affected ranges

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

Affected versions

3.*
3.3.7-3
3.3.15-1
4.*
4.0.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qbittorrent",
            "binary_version": "4.0.3-1"
        },
        {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.0.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json"
Ubuntu:20.04:LTS
qbittorrent

Package

Name
qbittorrent
Purl
pkg:deb/ubuntu/qbittorrent?arch=source&distro=focal

Affected ranges

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

Affected versions

4.*
4.1.7-1
4.1.7-1ubuntu2
4.1.7-1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qbittorrent",
            "binary_version": "4.1.7-1ubuntu3"
        },
        {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.1.7-1ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json"
Ubuntu:22.04:LTS
qbittorrent

Package

Name
qbittorrent
Purl
pkg:deb/ubuntu/qbittorrent?arch=source&distro=jammy

Affected ranges

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

Affected versions

4.*
4.2.5-0.1ubuntu1
4.2.5-0.1ubuntu2
4.3.9-1
4.3.9-2
4.4.0-1
4.4.0-2
4.4.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qbittorrent",
            "binary_version": "4.4.1-2"
        },
        {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.4.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json"
Ubuntu:24.04:LTS
qbittorrent

Package

Name
qbittorrent
Purl
pkg:deb/ubuntu/qbittorrent?arch=source&distro=noble

Affected ranges

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

Affected versions

4.*
4.5.4-1
4.6.0-1
4.6.1-1
4.6.1-2
4.6.2-1
4.6.2-2
4.6.2-3
4.6.3-1
4.6.3-1build1
4.6.3-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qbittorrent",
            "binary_version": "4.6.3-1build2"
        },
        {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.6.3-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json"
Ubuntu:25.10
qbittorrent

Package

Name
qbittorrent
Purl
pkg:deb/ubuntu/qbittorrent?arch=source&distro=questing

Affected ranges

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

Affected versions

5.*
5.0.4-1
5.0.5-1
5.1.0-1
5.1.0-2
5.1.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qbittorrent",
            "binary_version": "5.1.2-1"
        },
        {
            "binary_name": "qbittorrent-nox",
            "binary_version": "5.1.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json"
Ubuntu:26.04:LTS
qbittorrent

Package

Name
qbittorrent
Purl
pkg:deb/ubuntu/qbittorrent?arch=source&distro=resolute

Affected ranges

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

Affected versions

5.*
5.1.2-1
5.1.3-1
5.1.4-dmo1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "qbittorrent",
            "binary_version": "5.1.4-dmo1"
        },
        {
            "binary_name": "qbittorrent-nox",
            "binary_version": "5.1.4-dmo1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-30924.json"