CVE-2020-6808

6.5 mediumEPSS 1.1%

Medium (6.5) in mozilla firefox. EPSS 1.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 1.1% chance of exploitation in the next 30 days; higher than 65% of CVEs (scores of 2026-10-31)
CWE: CWE-290
Published: 2020-03-25
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mozilla:firefox

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1247968
https://www.mozilla.org/security/advisories/mfsa2020-08/
https://bugzilla.mozilla.org/show_bug.cgi?id=1247968
https://www.mozilla.org/security/advisories/mfsa2020-08/

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