The WP Magnific Popup WordPress plugin through 1.0 does not properly escape user-controlled link URLs before injecting them into the DOM when displaying image load error messages, allowing authenticated attackers with Author-level access or above to perform Stored Cross-Site Scripting attacks against any visiting user.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
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