---
title: "CVE-2026-30924: qui CORS Misconfiguration: Arbitrary Origins Trusted"
url: https://erroneo.us/security/cve/CVE-2026-30924/
description: "CVE-2026-30924 (github.com/autobrr/qui (Go)): qui is a web interface for managing qBittorrent instances. Versions 1.14.1 and below use a permissive CORS…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-19
date_modified: 2026-04-27
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-30924"
kev: false
cvss: 9
epss: 0.00462
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-30924: qui CORS Misconfiguration: Arbitrary Origins Trusted

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.5% , percentile 39: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 39% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Only applies if your dependency tree includes github.com/autobrr/qui (Go) < 1.15.0, fixed in 1.15.0 . Check your lockfile, including transitive dependencies.

## What it is

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

- Go `github.com/autobrr/qui` < 1.15.0 → fixed: 1.15.0

## Affected products (CVE record)

- autobrr qui: <= 1.14.1

## Severity

- GitHub_M CVSS 4.0: 9 `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`
- GitHub CVSS 4.0: 9.0 `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`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.46% probability of exploitation activity in the next 30 days; percentile 39.

## Sources

- [GitHub Advisory GHSA-h8vw-ph9r-xpch](https://github.com/advisories/GHSA-h8vw-ph9r-xpch)
- [CVE.org record CVE-2026-30924](https://www.cve.org/CVERecord?id=CVE-2026-30924)
- [NVD entry CVE-2026-30924](https://nvd.nist.gov/vuln/detail/CVE-2026-30924)
- [github.com](https://github.com/autobrr/qui/security/advisories/GHSA-h8vw-ph9r-xpch)
- [github.com](https://github.com/autobrr/qui/commit/424f7a0de089dce881e8bbecd220163a78e0295f)

---
Source page: https://erroneo.us/security/cve/CVE-2026-30924/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt