CVE-2016-5291 describes a same-origin policy bypass vulnerability in Mozilla Firefox and Thunderbird versions prior to 50 and 45.5 respectively, allowing an attacker to load arbitrary local content from disk using local shortcut files. With a CVSS score of 5.5 (Medium), this vulnerability requires local access and low attack complexity to achieve high confidentiality impact, but no integrity or availability impact. There is no public exploit code available (Metasploit, Nuclei, ExploitDB), it is not listed on the KEV catalog, and community discussion and media coverage are minimal, suggesting low current exploitation risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 45.5.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 50.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 45.5.0CPE matchmatch criteria | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.