CVE-2017-7834

6.1 mediumEPSS 1.5%

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.

Severity

CVSS 3.0

6.1 medium

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 1.5% chance of exploitation in the next 30 days; higher than 74% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2018-06-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox

References

http://www.securityfocus.com/bid/101832
http://www.securitytracker.com/id/1039803
https://bugzilla.mozilla.org/show_bug.cgi?id=1358009
https://www.mozilla.org/security/advisories/mfsa2017-24/
http://www.securityfocus.com/bid/101832

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