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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| php-mod/curl | composer | < 2.3.2 | 2.3.2 |
The vulnerability stems from two test endpoints that reflect user input without proper Content-Type headers. In post_file_path_upload.php, JSON output lacked application/json headers, allowing XSS via JSON/HTML confusion. In post_multidimensional.php, raw POST data was echoed back without text/plain headers, enabling direct script execution. The commit fixed these by adding proper headers, confirming the XSS vector was browser response type misinterpretation combined with unescaped output.
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