CVE-2019-11747 is a medium-severity vulnerability affecting Mozilla Firefox versions prior to 69 and Firefox ESR prior to 68.1. It concerns the "Forget about this site" feature, which, due to a bug, incorrectly removes HSTS settings for sites on the pre-load list. This allows a user to be temporarily unprotected by HSTS if they subsequently visit the site via an HTTP URL. The vulnerability has a CVSS score of 6.5, indicating a network-based attack requiring user interaction, with a high impact on integrity. There is no evidence of active exploitation, and no public exploit code (Metasploit, Nuclei, ExploitDB) is available. Community discussion and media coverage are minimal, suggesting low public attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 69.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* | ||
< 68.1.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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.