CVE Vulnerability

CVE-2020-26951

A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.1 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://www.mozilla.org/security/advisories/mfsa2020-50/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-51/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-52/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1667113 Issue Tracking Permissions Required
Configurations

Configuration 1

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Information

Published : 2020-12-09 01:15

Updated : 2020-12-09 07:49

NVD link : CVE-2020-26951

Mitre link : CVE-2020-26951

Products Affected
No products.
CWE
CWE-79