CVE-2018-5116

2018-06-1121:00:00

mozilla

www.cve.org

8.8 High

AI Score

Confidence

High

0.007 Low

EPSS

Percentile

80.1%

JSON

WebExtensions with the “ActiveTab” permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.

CNA Affected

[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "58",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]