Vulnerability in Mozilla Firefox

CVE-2016-5268

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.

EPSS: 0.012 (65.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2016-5268?
CVE-2016-5268 is a medium-severity vulnerability in Mozilla Firefox, classified under CWE-254. CVSS score: 4.3/10. Published 2016-08-05.
How severe is CVE-2016-5268?
Medium severity. CVSS v3 base score is 4.3 out of 10.