4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.01 Low
EPSS
Percentile
83.1%
WebKit developer Alexey Proskuryakov reported that the Mozilla HTML parser treated the backspace character as whitespace contrary to the HTML specification and different from other browsers. This difference might lead to Cross-site Scripting (XSS) risks on sites which filtered input in accordance with the specification.