In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade wordpress | Feb 20, 2019 | Dec 14, 2018 |
| Ubuntu | — | No solution exists | Jun 26, 2025 | Dec 14, 2018 |
| Wordpress | — | Upgrade Wordpress to version 4.9.9Upgrade Wordpress to version 5.0.1 | Jan 15, 2019 | Dec 14, 2018 |
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