ubuntu-cve-2026-30924
Vulnerability from osv_ubuntu
Published
2026-03-19 21:17
Modified
2026-05-20 15:26
Summary
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.

Severity
9.0 (Critical)
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
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "qbittorrent",
            "binary_version": "3.3.1-1"
          },
          {
            "binary_name": "qbittorrent-nox",
            "binary_version": "3.3.1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "qbittorrent",
        "purl": "pkg:deb/ubuntu/qbittorrent@3.3.1-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.3-2",
        "3.2.5-1",
        "3.3.1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "qbittorrent",
            "binary_version": "4.0.3-1"
          },
          {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.0.3-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "qbittorrent",
        "purl": "pkg:deb/ubuntu/qbittorrent@4.0.3-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3.7-3",
        "3.3.15-1",
        "4.0.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "qbittorrent",
            "binary_version": "4.1.7-1ubuntu3"
          },
          {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.1.7-1ubuntu3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "qbittorrent",
        "purl": "pkg:deb/ubuntu/qbittorrent@4.1.7-1ubuntu3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.1.7-1",
        "4.1.7-1ubuntu2",
        "4.1.7-1ubuntu3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "qbittorrent",
            "binary_version": "4.4.1-2"
          },
          {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.4.1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "qbittorrent",
        "purl": "pkg:deb/ubuntu/qbittorrent@4.4.1-2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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": "4.6.3-1build2"
          },
          {
            "binary_name": "qbittorrent-nox",
            "binary_version": "4.6.3-1build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "qbittorrent",
        "purl": "pkg:deb/ubuntu/qbittorrent@4.6.3-1build2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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": "5.1.2-1"
          },
          {
            "binary_name": "qbittorrent-nox",
            "binary_version": "5.1.2-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "qbittorrent",
        "purl": "pkg:deb/ubuntu/qbittorrent@5.1.2-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "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": "5.1.4-dmo1"
          },
          {
            "binary_name": "qbittorrent-nox",
            "binary_version": "5.1.4-dmo1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "qbittorrent",
        "purl": "pkg:deb/ubuntu/qbittorrent@5.1.4-dmo1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.1.2-1",
        "5.1.3-1",
        "5.1.4-dmo1"
      ]
    }
  ],
  "aliases": [],
  "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\u0027s 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.",
  "id": "UBUNTU-CVE-2026-30924",
  "modified": "2026-05-20T15:26:08Z",
  "published": "2026-03-19T21:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-30924"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-30924"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/autobrr/qui/commit/424f7a0de089dce881e8bbecd220163a78e0295f"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/autobrr/qui/security/advisories/GHSA-h8vw-ph9r-xpch"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-30924"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.