Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mozilla

Published: 2021-12-08T21:21:30

Updated: 2022-08-10T05:12:25

Reserved: 2021-08-10T00:00:00


Link: CVE-2021-38509

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2021-12-08T22:15:09.050

Modified: 2022-12-09T15:22:38.027


Link: CVE-2021-38509

JSON object: View

cve-icon Redhat Information

No data.

CWE