CVE-2017-7834: XSS
A "data:" URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when "data:" documents also inherited the context of the original page this would allow for potential cross-site scripting (XSS) attacks. This vulnerability affects Firefox < 57.
Other sources
A data: URL loaded in a new tab did not inherit the Content Security Policy (CSP) of the original page, allowing for bypasses of the policy including the execution of JavaScript. In prior versions when data: documents also inherited the context of the original page this would allow for potential cross-site scripting (XSS) attacks.
Affected Software
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is CVE-2017-7834?
CVE-2017-7834 refers to a vulnerability in Mozilla Firefox that allows for bypasses of the Content Security Policy (CSP) and the execution of JavaScript.
How does CVE-2017-7834 affect Mozilla Firefox?
CVE-2017-7834 affects Mozilla Firefox versions up to and including 57.0.2.
What is the severity of CVE-2017-7834?
CVE-2017-7834 has a severity rating of medium with a CVSS score of 6.1.
How can I fix CVE-2017-7834?
To fix CVE-2017-7834, it is recommended to update Mozilla Firefox to version 57.0.1 or later.
Where can I find more information about CVE-2017-7834?
You can find more information about CVE-2017-7834 on the Mozilla Bugzilla and Mozilla Security Advisories websites.