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.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1667113 | Issue Tracking Permissions Required Vendor Advisory |
| 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 Vendor Advisory |
| 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 |
Configurations
Configuration 1 (hide)
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History
21 Nov 2024, 05:20
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=1667113 - Issue Tracking, Permissions Required, Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2020-50/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2020-51/ - Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2020-52/ - Vendor Advisory |
Information
Published : 2020-12-09 01:15
Updated : 2024-11-21 05:20
NVD link : CVE-2020-26951
Mitre link : CVE-2020-26951
CVE.ORG link : CVE-2020-26951
JSON object : View
Products Affected
mozilla
- thunderbird
- firefox_esr
- firefox
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')