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.
References
Link | Resource |
---|---|
https://bugzilla.mozilla.org/show_bug.cgi?id=1666300 | 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 |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mozilla
Published: 2020-12-09T00:21:39
Updated: 2020-12-09T00:21:39
Reserved: 2020-10-12T00:00:00
Link: CVE-2020-26956
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-12-09T01:15:12.957
Modified: 2020-12-10T17:02:03.177
Link: CVE-2020-26956
JSON object: View
Redhat Information
No data.
CWE