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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Qyrr Code Plugin | — | Update qyrr-code plugin to version 0.8, or a newer patched version | May 15, 2025 | Jul 26, 2021 |
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