CVE-2020-6808

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

When a JavaScript URL (javascript:) is evaluated and the result is a string, this string is parsed to create an HTML document, which is then presented. Previously, this document's URL (as reported by the document.location property, for example) was the originating javascript: URL which could lead to spoofing attacks; it is now correctly the URL of the originating document. This vulnerability affects Firefox < 74.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-290

Affected software

Vendor	Product	Versions
Mozilla	Firefox	>= unspecified, < 74

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1247968Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2020-08/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1247968Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2020-08/Vendor Advisory

Timeline

Published: Mar 25, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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