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

CVE-2026-30924

Published

2026-03-19T21:17:00Z

Modified

2026-09-09T14:35:55Z

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:25.10 / qbittorrent

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown 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"