PT-2020-16571 · Mozilla+6 · Firefox+8
Irvan Kurniawan
+1
·
Published
2020-11-17
·
Updated
2024-12-12
·
CVE-2020-26956
CVSS v3.1
6.1
Medium
| Vector | AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 83
Firefox ESR versions prior to 78.5
Thunderbird versions prior to 78.5
Description
The issue arises when removing HTML elements during sanitization, which can lead to existing SVG event handlers being retained, resulting in cross-site scripting (XSS).
Recommendations
For Firefox versions prior to 83, update to version 83 or later.
For Firefox ESR versions prior to 78.5, update to version 78.5 or later.
For Thunderbird versions prior to 78.5, update to version 78.5 or later.
Exploit
Fix
XSS
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Firefox
Firefox Esr
Linuxmint
Red Hat
Suse
Thunderbird
Ubuntu