This issue was addressed by improved management of object lifetimes. This issue is fixed in iOS 12.5.2, iOS 14.4.2 and iPadOS 14.4.2, watchOS 7.3.3. Processing maliciously crafted web content may lead to universal cross site scripting. Apple is aware of a report that this issue may have been actively exploited..
                
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        History
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 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: apple
Published: 2021-04-02T18:07:52.000Z
Updated: 2025-10-21T23:25:49.688Z
Reserved: 2020-12-08T00:00:00.000Z
Link: CVE-2021-1879
 Vulnrichment
                        Vulnrichment
                    Updated: 2024-08-03T16:25:06.324Z
 NVD
                        NVD
                    Status : Analyzed
Published: 2021-04-02T19:15:20.770
Modified: 2025-10-23T18:01:38.537
Link: CVE-2021-1879
 Redhat
                        Redhat
                    No data.