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CVE-2020-26956

CVSS v3.1 6.1 (Medium)
61% Progress
CVSS v2.0 4.3 (Medium)
43% Progress
EPSS 0.10 % (42th)
0.10% Progress
Affected Products 3
Advisories 34
Info CVSS EPSS CAPEC Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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.

Weaknesses
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE Status
PUBLISHED
CNA
Mozilla Corporation
Published Date
2020-12-09 01:15:12
(3 years ago)
Updated Date
2020-12-10 17:02:03
(3 years ago)

Affected Products

Mozilla

Configuration #1

    CPE23 From Up To
  Mozilla Firefox prior 83.0 version cpe:2.3:a:mozilla:firefox < 83.0
  Mozilla Firefox Esr prior 78.5 version cpe:2.3:a:mozilla:firefox_esr < 78.5
  Mozilla Thunderbird prior 78.5 version cpe:2.3:a:mozilla:thunderbird < 78.5