When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This would lead to internal errors and unexpected behavior in the Screenshots code. This vulnerability affects Firefox < 83.
References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1665820 Issue Tracking Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-50/ Vendor Advisory
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mozilla

Published: 2020-12-09T00:25:40

Updated: 2020-12-09T00:25:40

Reserved: 2020-10-12T00:00:00


Link: CVE-2020-26967

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2020-12-09T01:15:13.643

Modified: 2020-12-10T16:28:25.413


Link: CVE-2020-26967

JSON object: View

cve-icon Redhat Information

No data.