CVE-2018-1000559: qutebrowser Cross Site Scripting (XSS) Vulnerability

qutebrowser Updated 02 Oct 2025

Summary

13/09/2018
Yes i
Moderate
6.1

CVE-2018-1000559: Qutebrowser XSS Vulnerability. Affects qutebrowser versions >= 0.11.0, < 1.3.3. Fixed in 1.3.3. How to fix ↓

Also tracked for

The same CVE-2018-1000559 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.

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Background

qutebrowser is an open-source web browser that focuses on keyboard efficiency and minimalism. It is built using Python and QtWebEngine, providing users with a fast and customizable browsing experience. However, qutebrowser versions prior to v1.4.0 are vulnerable to a Cross Site Scripting (XSS) attack.

Vulnerability Detail

The XSS vulnerability in qutebrowser version 0.11.0 allows an attacker to inject malicious JavaScript code into the qute://history page. By exploiting this vulnerability, an attacker can steal a user's browsing history. The attack requires the victim to open a page with a specially crafted <title> attribute and then access the qute://history site using the :history command.

How To Fix

Latest published version: 3.7.0 as of 23 Oct 2026

pip install --upgrade "qutebrowser==3.7.0"

Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.

If you need the minimum change

1.3.3

This is the first release that contains the fix.

pip install --upgrade "qutebrowser==1.3.3"

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Workaround

There is no known workaround for this vulnerability. It is recommended to update to the fixed versions of qutebrowser as soon as possible.

Conclusion

The qutebrowser XSS vulnerability in versions prior to v1.4.0 poses a moderate security risk, allowing attackers to steal a user's browsing history. Users should update their qutebrowser installation to either v1.3.3 or v1.4.0 to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for qutebrowser →

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FAQ

qutebrowser is an open-source web browser that prioritizes keyboard efficiency and minimalism.

Cross Site Scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by users.

The vulnerability allows an attacker to inject JavaScript code into the qute://history page, enabling them to steal a user's browsing history.

qutebrowser versions prior to v1.4.0 are affected by this XSS vulnerability.

Updating qutebrowser to either v1.3.3 or v1.4.0 will protect you from this vulnerability. It is recommended to always keep your software up to date.

Related vulnerabilities

Recent vulnerabilities recorded for qutebrowser.

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How To Fix

Latest published version: 3.7.0 as of 23 Oct 2026

pip install --upgrade "qutebrowser==3.7.0"

Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.

If you need the minimum change

1.3.3

This is the first release that contains the fix.

pip install --upgrade "qutebrowser==1.3.3"

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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