CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
EPSS
Percentile
45.3%
The Mozilla Foundation Security Advisory describes this flaw as: Regular expressions used to filter out forbidden properties and values from style directives in calls to console.log
weren’t accounting for external URLs. Data could then be potentially exfiltrated from the browser.