The Qyrr WordPress plugin before 0.7 does not escape the data-uri of the QR Code when outputting it in a src attribute, allowing for Cross-Site Scripting attacks. Furthermore, the data_uri_to_meta AJAX action, available to all authenticated users, only had a CSRF check in place, with the nonce available to users with a role as low as Contributor allowing any user with such role (and above) to set a malicious data-uri in arbitrary QR Code posts, leading to a Stored Cross-Site Scripting issue.
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Fri, 20 Jun 2025 17:15:00 +0000
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Status: PUBLISHED
Assigner: WPScan
Published:
Updated: 2025-06-20T16:54:49.993Z
Reserved: 2021-01-14T15:03:46.768Z
Link: CVE-2021-24559

Updated: 2024-08-03T19:35:20.264Z

Status : Modified
Published: 2024-01-16T16:15:08.953
Modified: 2025-06-20T17:15:27.930
Link: CVE-2021-24559

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