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WordPress Core < 6.5.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Avatar Block

WordPress Core is vulnerable to Stored Cross-Site Scripting via user display names in the Avatar block in various versions up to 6.5.2 due to insufficient output escaping on the display name. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Source: Wordfence

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Thank you for reporting.

This vulnerability affects version 6 and above, but ClassicPress is not affected because all the block stuff is removed.

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