medium5.4
CVE-2025-53631
flaskBlog is a blog app built with Flask.
Impact
flaskBlog is a blog app built with Flask. In versions 2.8.1 and prior, improper sanitization of postContent when submitting POST requests to /createpost leads to arbitrary JavaScript execution (XSS) on all pages the post is reflected on including /, /post/[ID], /admin/posts, and /user/[ID] of the user that made the post. At time of publication, there are no public patches available.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Dogukanurker | Flaskblog | through 2.8.1 |