CVE-2020-26956

In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS

published December 9, 2020

CVSS
—
EPSS
1%
Percentile
68.8
In the wild
Unconfirmed
What it is

In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01233 · 68.8th percentile
Published
2020-12-09T00:21Z
EPSS history
Timeline
  • 09 DEC 00:21Z
    In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS
    cvelistv5