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medium6.1

CVE-2018-5143

URLs using "javascript:" have the protocol removed when pasted into the addressbar to protect users from cross-site scripting (XSS) attacks, but if a tab chara…

Impact

URLs using "javascript:" have the protocol removed when pasted into the addressbar to protect users from cross-site scripting (XSS) attacks, but if a tab character is embedded in the "javascript:" URL the protocol is not removed and the script will execute. This could allow users to be socially engineered to run an XSS attack against themselves. This vulnerability affects Firefox < 59.

Affected products

VendorProductAffected versions
MozillaFirefox
before 59.0
CanonicalUbuntu Linux
Versions 14.04, 16.04, 17.10

Weakness classification

References