CVE-2017-7839

MEDIUM 6.1CVE-2017-7839 · Published 11/06/2018 · updated 17/06/2026

In short

CVE-2017-7839 is a MEDIUM (CVSS 6.1) vulnerability affecting firefox (mozilla).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 66.3% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
firefox mozilla	`≤ 56.0.2`	No fix yet

Description

Control characters prepended before "javascript:" URLs pasted in the addressbar can cause the leading characters to be ignored and the pasted JavaScript to be executed instead of being blocked. This could be used in social engineering and self-cross-site-scripting (self-XSS) attacks where users are convinced to copy and paste text into the addressbar. This vulnerability affects Firefox < 57.

References

securityfocus.com/bid/101832 · Third Party Advisory
securitytracker.com/id/1039803 · Third Party Advisory
bugzilla.mozilla.org/show_bug.cgi · Issue Tracking
mozilla.org/security/advisories/mfsa2017-24 · Vendor Advisory

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Package

Affected versions

Patched versions

firefox

mozilla

≤ 56.0.2

No fix yet

Description

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