CVE-2020-26966

2020-12-0900:25:22

mozilla

www.cve.org

address bar

mdns request

information leak

windows operating systems

firefox

thunderbird

AI Score

6.4

Confidence

High

EPSS

0.002

Percentile

52.2%

JSON

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.

CNA Affected

[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "affected",
        "version": "< 83"
      }
    ]
  },
  {
    "product": "Firefox ESR",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "affected",
        "version": "< 78.5"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "affected",
        "version": "< 78.5"
      }
    ]
  }
]