CVE-2020-26966 — Sensitive Information Exposure in Mozilla Firefox
Severity
6.5MEDIUMNVD
EPSS
0.4%
top 36.57%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 9
Latest updateMay 24
Description
Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that string; resulting in an information leak. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6
Affected Packages6 packages
🔴Vulnerability Details
3GHSA▶
GHSA-c627-2gcf-x56f: Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that st↗2022-05-24
CVEList▶
CVE-2020-26966: Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that st↗2020-12-09
OSV▶
CVE-2020-26966: Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that st↗2020-12-09
📋Vendor Advisories
5Debian▶
CVE-2020-26966: firefox - Searching for a single word from the address bar caused an mDNS request to be se...↗2020