Mozilla Firefox before 48.0 does not properly set the LINKABLE and URI_SAFE_FOR_UNTRUSTED_CONTENT flags of about: URLs that are used for error pages, which makes it easier for remote attackers to conduct spoofing attacks via a crafted URL, as demonstrated by misleading text after an about:neterror?d= substring.
2016-08-05T01:59:24.207
2025-04-12T10:46:40.837
Deferred
CVSSv3.0: 4.3 (MEDIUM)
AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9