Vulnerability · Published Mar 19, 2026 · Assigned by GitHub_M
CVE-2026-30924qui CORS Misconfiguration: Arbitrary Origins Trusted
Critical 9.0
In plain English
A critical-severity security flaw in qui from autobrr. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/autobrr/qui | 1.15.0 | GHSA-h8vw-ph9r-xpch |
| Go | github.com/autobrr/qui | no fix listed | GO-2026-4774 |
| Ubuntu:25.10 | qbittorrent | no fix listed | UBUNTU-CVE-2026-30924 |
Affected products (as reported)
Weakness: CWE-942 · Vector: 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
References
- https://github.com/autobrr/qui/security/advisories/GHSA-h8vw-ph9r-xpch x_refsource_CONFIRM
- https://github.com/autobrr/qui/commit/424f7a0de089dce881e8bbecd220163a78e0295f x_refsource_MISC