CVE-2020-26951

CVE Details

Release Date:

2020-12-09

Description

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.

See more information about CVE-2020-26951 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score:	6.1	Base Metrics:	AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Access Vector:	Network	Attack Complexity:	Low
Privileges Required:	None	User Interaction:	Required
Scope:	Changed	Confidentiality Impact:	Low
Integrity Impact:	Low	Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (firefox)	ELSA-2020-5257	2020-12-01
Oracle Linux version 6 (thunderbird)	ELSA-2020-5238	2020-12-01
Oracle Linux version 7 (firefox)	ELSA-2020-5239	2020-12-01
Oracle Linux version 7 (thunderbird)	ELSA-2020-5235	2020-12-01
Oracle Linux version 8 (firefox)	ELSA-2020-5237	2020-12-01
Oracle Linux version 8 (thunderbird)	ELSA-2020-5236	2020-12-01

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team